CNC lathe chuck structure for preventing workpiece from slipping

Abstract

The utility model relates to the technical field of shaft workpiece, concretely to a CNC lathe clamping jaw structure of preventing workpiece from slipping, including the casing, the inner surface of casing is provided with drive mechanism, drive mechanism includes the cylinder, the inner surface fixed connection of cylinder and casing, the output shaft fixed connection of cylinder has the I -beam connector, the upper surface fixed connection of I -beam connector has small -size motor, the inner surface of I -beam connector is penetrated and is connected with the rotation of bidirectional screw rod, small -size motor passes through transmission belt and is connected with bidirectional screw rod drive, the utility model discloses the cooperation of the cylinder, I -beam connector, L type clamping jaw rod and small -size motor that sets up, can drive L type clamping jaw rod and separate, cooperation clamping jaw body carries out the capture to workpiece, simultaneously cooperates gear and rack, can make clamping jaw adjust hook angle.

Description

Technical Field

[0001] This utility model relates to the field of shaft workpiece technology, specifically a CNC lathe gripper structure to prevent workpiece slippage. Background Technology

[0002] CNC lathes are among the most widely used CNC machine tools. They are mainly used for cutting shaft parts and can perform grooving, drilling, reaming, boring, or honing. Before machining shaft parts, they usually need to be clamped and fixed in place to complete the machining process.

[0003] A search revealed a CNC lathe shaft workpiece machining fixture with application number CN113118822B, comprising a housing, a shaft end clamping device, an auxiliary clamping device, and a translation device. The shaft end clamping device is located inside the housing near the right end. The auxiliary clamping device is installed to the left of the shaft end clamping device, and the translation device is located to the left of the auxiliary clamping device. This invention can solve the following problems that existing CNC lathes may encounter during clamping: a. Most existing CNC lathes use a three-jaw chuck to clamp and fix one end of the shaft part. This method requires manual operation to achieve clamping and fixing, which is time-consuming and labor-intensive, and cannot guarantee the clamping effect; b. When the shaft part being machined is a long shaft, its own weight causes the axis to shift during machining, which can easily damage the tool and result in low machining accuracy, failing to meet usage requirements.

[0004] However, in most cases, the grippers hold the workpiece after high-speed cutting. The workpiece itself is at a high temperature. If the grippers hold the workpiece for a long time, the clamping parts of the grippers may expand and contract due to temperature, causing fasteners such as screws to loosen. In view of this, we propose a CNC lathe gripper structure to prevent the workpiece from slipping. Utility Model Content

[0005] The purpose of this utility model is to provide a CNC lathe gripper structure that prevents workpiece slippage. This CNC lathe gripper structure that prevents workpiece slippage solves the problem that screws are prone to loosening after the gripper has been holding the workpiece for a long time.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A CNC lathe gripper structure for preventing workpiece slippage includes a housing. A drive mechanism is provided on the inner surface of the housing. The drive mechanism includes a cylinder, which is fixedly connected to the inner surface of the housing. An I-shaped connector is fixedly connected to the output shaft of the cylinder. A small motor is fixedly connected to the upper surface of the I-shaped connector. A bidirectional lead screw passes through the inner surface of the I-shaped connector and is rotatably connected to it. The small motor is driven by the bidirectional lead screw via a transmission belt. The bidirectional lead screw passes through an L-shaped gripper rod and is threadedly connected to it. The L-shaped gripper rod passes through the housing and is slidably connected to it.

[0008] Preferably, the L-shaped gripper bar is slidably connected to the I-shaped connector, and a groove is provided on the lower surface of the housing, and the groove of the housing is slidably connected to the I-shaped connector.

[0009] Preferably, the front surface of the L-shaped gripper bar is rotatably connected to the gripper body via a drive shaft, and the drive shaft of the L-shaped gripper bar is fixedly connected to a gear.

[0010] Preferably, a rack is fixedly connected to the lower surface of the housing, and the rack meshes with a gear.

[0011] Preferably, a cooling mechanism is provided on the lower surface of the housing. The cooling mechanism includes a cooling box with a T-shaped cross-section. The cooling box penetrates the housing and is rotatably connected to the housing. A water pipe is fixedly connected to the lower surface of the cooling box, and the outlet of the water pipe faces the L-shaped gripper bar.

[0012] Preferably, the lower surface of the cooling box is provided with a drainage hole, the inner surface of the drainage hole is slidably connected to a piston, the upper surface of the piston is fixedly connected to an elastic telescopic rod, and the elastic telescopic rod is fixedly connected to the cooling box.

[0013] Preferably, the upper surface of the cooling box is perforated by a T-shaped rod and slidably connected to the T-shaped rod, and the slidable part of the elastic telescopic rod is rotatably connected to the I-shaped connector through the T-shaped rod.

[0014] By employing the above technical solution, this utility model provides a CNC lathe gripper structure to prevent workpiece slippage. It possesses at least the following beneficial effects:

[0015] (1) This utility model, through the combination of the set cylinder, I-shaped connector, L-shaped gripper rod and small motor, can drive the L-shaped gripper rod to aggregate and separate, and cooperate with the gripper body to grasp the workpiece. At the same time, with the cooperation of gears and racks, the gripper can adjust the angle of the hook.

[0016] (2) This utility model can cool the L-shaped gripper rod by means of a cooling box, water pipe, piston and T-shaped rod. At the same time, the output of coolant is controlled by a cylinder to facilitate the cooling of the L-shaped gripper rod and gripper body. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0018] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall rear view structure of this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the overall structure of this utility model;

[0021] Figure 4 In this utility model Figure 3 Enlarged schematic diagram of part A in the middle.

[0022] In the diagram: 1. Housing; 2. Drive mechanism; 21. Cylinder; 22. I-shaped connector; 23. Small motor; 24. Two-way lead screw; 25. L-shaped gripper bar; 26. Gripper body; 27. Gear; 28. Rack; 3. Cooling mechanism; 31. Cooling box; 32. Water pipe; 33. Drain hole; 34. Piston; 35. Elastic telescopic rod; 36. T-shaped rod. 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] In this embodiment, the small motor 23 can be a 6mm stepper motor produced by Dongguan Kehua Precision Industrial Technology Co., Ltd., and its matching circuit and power supply are also provided by the manufacturer. In addition, the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve the improvement of software and methods.

[0025] In this embodiment, the cylinder 21 can be manufactured by Wenzhou Zoni Pneumatic Co., Ltd., and its supporting circuit and power supply are also provided by the manufacturer. In addition, the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve the improvement of software and methods.

[0026] Example 1

[0027] A CNC lathe gripper structure to prevent workpiece slippage, such as Figures 1-4 As shown, the device includes a housing 1. A drive mechanism 2 is provided on the inner surface of the housing 1. The drive mechanism 2 includes a cylinder 21, which is fixedly connected to the inner surface of the housing 1. The drive mechanism 2 includes the cylinder 21 as one of the power sources. The cylinder body of the cylinder 21 is fixedly connected to the inner surface of the housing 1 by bolts or other means to ensure its stability during operation. An I-shaped connector 22 is fixedly connected to the output shaft of the cylinder 21. A small motor 23 is fixedly connected to the upper surface of the I-shaped connector 22. The inner surface of the I-shaped connector 22 extends through... A small motor 23 is fixedly installed on the upper surface of the I-shaped connector 22 by screws or other fastening methods, and is rotatably connected to the bidirectional lead screw 24. The small motor 23 provides rotational power for the opening and closing of the grippers. The small motor 23 is connected to the bidirectional lead screw 24 via a transmission belt. The bidirectional lead screw 24 passes through and is threadedly connected to the L-shaped gripper rod 25. The L-shaped gripper rod 25 passes through and is slidably connected to the housing 1. Two L-shaped gripper rods 2 are threadedly connected to the bidirectional lead screw 24. 5. The bidirectional lead screw 24 passes through the threaded hole of the L-shaped gripper bar 25, converting the rotational motion into linear motion through the lead screw and nut pair, thereby driving the two L-shaped gripper bars 25 to move closer or further apart. The L-shaped gripper bars 25 are slidably connected to the I-shaped connector 22. A groove is provided on the lower surface of the housing 1, and the groove of the housing 1 is slidably connected to the I-shaped connector 22. The front surface of the L-shaped gripper bar 25 is rotatably connected to the gripper body 26 through a drive shaft. The lower end of the front surface of each L-shaped gripper bar 25 is connected to a horizontally set drive shaft. A gripper body 26 is rotatably connected to the shaft. The gripper body 26 is used to directly grip the workpiece. The drive shaft of the L-shaped gripper bar 25 is fixedly connected to a gear 27. A rack 28 is fixedly connected to the lower surface of the housing 1. The rack 28 meshes with the gear 27. When the cylinder 21 drives the I-shaped connector 22 and the L-shaped gripper bar 25 to move back and forth as a whole, the gear 27 will roll along the rack 28, thereby driving the drive shaft and the gripper body 26 to rotate, realizing the adjustment of the gripping angle of the gripper body 26 to better adapt to the shape of the workpiece and prevent slippage.

[0028] In this embodiment, the combination of the cylinder 21, the I-shaped connector 22, the L-shaped gripper rod 25 and the small motor 23 can drive the L-shaped gripper rod 25 to converge and diverge, and cooperate with the gripper body 26 to grasp the workpiece. At the same time, the combination of the gear 27 and the rack 28 can adjust the angle of the gripper hook.

[0029] Example 2

[0030] like Figures 1-4 As shown, a cooling mechanism 3 is provided on the lower surface of the housing 1. The cooling mechanism 3 includes a cooling box 31 with a T-shaped cross-section. The cooling box 31 penetrates the housing 1 and is rotatably connected to the housing 1. A water pipe 32 is fixedly connected to the lower surface of the cooling box 31. The outlet of the water pipe 32 faces the L-shaped gripper bar 25 and the clamping area between the L-shaped gripper bar 25 and the gripper body 26, and is used to spray coolant. A drainage hole 33 is provided on the lower surface of the cooling box 31. A piston 34 is slidably connected to the inner surface of the drainage hole 33. The piston 34 is used to control the drainage. The opening and closing of the hole 33 is controlled by an elastic telescopic rod 35 fixedly connected to the upper surface of the piston 34. The elastic telescopic rod 35 is fixedly connected to the cooling box 31. A T-shaped rod 36 passes through the upper surface of the cooling box 31 and is slidably connected to the T-shaped rod 36. The slidable part of the elastic telescopic rod 35 is rotatably connected to the I-shaped connector 22 through the T-shaped rod 36. When the I-shaped connector 22 moves, it will drive the slidable part of the elastic telescopic rod 35 to move through the T-shaped rod 36, thereby controlling the piston 34 to slide in the drainage hole 33, realizing the opening and closing of the drainage hole 33, and cooperating with the water pipe 32 to complete the linkage control of the cooling action.

[0031] In this embodiment, the L-shaped gripper rod 25 can be cooled by the cooling box 31, water pipe 32, piston 34 and T-shaped rod 36. At the same time, the output of coolant is controlled by the cylinder 21 to facilitate the cooling of the L-shaped gripper rod 25 and the gripper body 26.

[0032] In use, the CNC lathe gripper structure of this utility model, which prevents workpiece slippage, utilizes a small motor 23 to drive a bidirectional lead screw 24 to rotate, enabling the two sets of L-shaped gripper bars 25 to move together or apart. This movement allows the gripper body 26 to grasp the workpiece. Simultaneously, the cylinder 21, through the I-shaped connector 22, drives the gripper body 26 and the L-shaped gripper bars 25 to move up and down. When the gripper body 26 moves up and down, the interaction of the rack 28 and the gear 27 drives the gripper body 26 to rotate, allowing it to rotate upwards after grasping the workpiece, making the workpiece gripping more stable. At the same time, when the I-shaped connector 22 moves upwards, it drives the piston 34 upwards through the T-shaped rod 36, opening the drainage hole 33. Due to gravity, the coolant flows through the water pipe 32 to the L-shaped gripper bars 25 and the gripper body 26, cooling them.

[0033] 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.

[0034] 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 CNC lathe gripper structure for preventing workpiece slippage, comprising a housing (1), characterized in that: The inner surface of the housing (1) is provided with a driving mechanism (2). The driving mechanism (2) includes a cylinder (21). The cylinder (21) is fixedly connected to the inner surface of the housing (1). The output shaft of the cylinder (21) is fixedly connected to an I-shaped connector (22). The upper surface of the I-shaped connector (22) is fixedly connected to a small motor (23). The inner surface of the I-shaped connector (22) is penetrated by a bidirectional lead screw (24) and is rotatably connected to the bidirectional lead screw (24). The small motor (23) is connected to the bidirectional lead screw (24) via a transmission belt. The bidirectional lead screw (24) penetrates the L-shaped gripper rod (25) and is threadedly connected to the L-shaped gripper rod (25). The L-shaped gripper rod (25) penetrates the housing (1) and is slidably connected to the housing (1).

2. The CNC lathe gripper structure for preventing workpiece slippage according to claim 1, characterized in that: The L-shaped gripper bar (25) is slidably connected to the I-shaped connector (22), and a groove is provided on the lower surface of the housing (1). The groove of the housing (1) is slidably connected to the I-shaped connector (22).

3. The CNC lathe gripper structure for preventing workpiece slippage according to claim 2, characterized in that: The front surface of the L-shaped gripper bar (25) is rotatably connected to the gripper body (26) via a drive shaft, and the drive shaft of the L-shaped gripper bar (25) is fixedly connected to a gear (27).

4. The CNC lathe gripper structure for preventing workpiece slippage according to claim 3, characterized in that: A rack (28) is fixedly connected to the lower surface of the housing (1), and the rack (28) meshes with a gear (27).

5. A CNC lathe gripper structure for preventing workpiece slippage according to claim 4, characterized in that: A cooling mechanism (3) is provided on the lower surface of the housing (1). The cooling mechanism (3) includes a cooling box (31). The cross-sectional shape of the cooling box (31) is T-shaped. The cooling box (31) passes through the housing (1) and is rotatably connected to the housing (1). A water pipe (32) is fixedly connected to the lower surface of the cooling box (31). The outlet of the water pipe (32) faces the L-shaped gripper rod (25).

6. A CNC lathe gripper structure for preventing workpiece slippage according to claim 5, characterized in that: The lower surface of the cooling box (31) is provided with a drainage hole (33), and a piston (34) is slidably connected to the inner surface of the drainage hole (33). An elastic telescopic rod (35) is fixedly connected to the upper surface of the piston (34), and the elastic telescopic rod (35) is fixedly connected to the cooling box (31).

7. A CNC lathe gripper structure for preventing workpiece slippage according to claim 6, characterized in that: The upper surface of the cooling box (31) is slidably connected to a T-shaped rod (36), and the slidable part of the elastic telescopic rod (35) is rotatably connected to the I-shaped connector (22) through the T-shaped rod (36).

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