Fixture for positioning of numerically controlled lathe

Abstract

The utility model discloses a numerical control lathe positioning clamp which comprises a supporting base, the upper surface of the supporting base extends upwards to form a plurality of sets of protective shells, and an automatic clamp height adjusting device is arranged on the supporting base so that the bottom of a workpiece for a numerical control lathe can be conveniently processed. The automatic clamp height adjusting device comprises a driving motor, a lifting adjusting lead screw and a sliding block which are arranged in the protective shell, an output shaft of the driving motor is connected to the bottom end of the lifting adjusting lead screw, and the sliding block is connected to the peripheral face of the lifting adjusting lead screw in a matched mode. A transverse supporting plate is arranged between the sliding blocks, a detachable workpiece clamp is arranged on the transverse supporting plate, and a workpiece for the numerical control lathe is clamped and fixed through the workpiece clamp. According to the automatic clamp height adjusting device, convenience can be provided for workers, the bottom end of the workpiece can be exposed conveniently by adjusting the height of the workpiece for the numerical control lathe, and the workers can process the bottom of the workpiece conveniently.

Description

Technical Field

[0001] This utility model relates to the field of fixtures for CNC lathes, specifically to a positioning fixture for CNC lathes. Background Technology

[0002] CNC lathes are among the most widely used CNC machine tools. When machining workpieces, it is necessary to position the workpieces, which requires the use of positioning fixtures.

[0003] Chinese patent disclosure CN212762297U discloses a multi-functional fixture for CNC lathes. It includes a base plate, with fixed plates fixedly connected to both sides of the top of the base plate. A cylinder is fixedly connected to the top of each fixed plate, and a fixed frame is fixedly connected to one side of the cylinder. Movable rods are movably connected to both sides of the inner cavity of the fixed frame via bearings. One end of each movable rod is movably connected to a movable block via a rotating shaft, and a connecting block is fixedly connected to one side of each movable block. This invention uses the cylinder to drive the fixed frame and movable rods to extend, causing the two movable rods to move the two movable blocks towards the ends of the limiting grooves, thereby releasing the workpiece from fixation. Conversely, the cylinder drives the fixed frame and movable rods to retract, causing the movable rods to move the movable blocks, connecting blocks, and clamping blocks to fix the workpiece. This solves the problem of existing CNC lathes lacking workpiece fixation, leading to workpiece displacement and reduced processing efficiency during machining.

[0004] When the above-mentioned CNC lathe fixture is in use, the workpiece can be clamped and fixed more quickly by the extension and retraction of the cylinder. However, the clamping height of the workpiece is not adjustable and cannot be adjusted according to the needs of the CNC lathe equipment and the staff on site. Moreover, the above structure can only process the top of the workpiece.

[0005] Therefore, the development of a positioning fixture for CNC lathes has become an urgent problem for the entire society. Utility Model Content

[0006] To solve the above technical problems, the technical solution provided by this utility model is: a positioning fixture for a CNC lathe, including a support base, with multiple sets of protective shells extending upward from the upper surface of the support base, and an automatic height adjustment device for the fixture provided on the support base to facilitate the bottom processing of the workpiece for the CNC lathe;

[0007] The automatic height adjustment device for the clamp includes a drive motor, a lifting adjustment screw, and a sliding block disposed inside the protective housing. The output shaft of the drive motor is connected to the bottom end of the lifting adjustment screw, and the sliding block is fitted onto the outer circumferential surface of the lifting adjustment screw.

[0008] A transverse support plate is provided between the sliding blocks, and a detachable workpiece clamp is provided on the transverse support plate to clamp and fix the workpiece for the CNC lathe.

[0009] Furthermore, the protective housing is provided with two sets of guide rails inside, and the guide rails are provided with engaging protrusions on both sides. The bottom end of the sliding block is provided with engaging grooves that engage with the engaging protrusions.

[0010] Furthermore, a fixing plate is installed on the transverse support plate, and a pneumatic telescopic rod is provided between the fixing plate and the workpiece fixture. The end of the pneumatic telescopic rod is fixed to the workpiece fixture by screws.

[0011] The advantages of the utility model compared to the prior art are:

[0012] This utility model features an automatic clamping height adjustment device on a support base. The device includes a drive motor, a lifting adjustment screw, and a sliding block. It can adjust the clamping height of the corresponding workpiece according to the needs of the CNC lathe equipment and the operator. The drive motor drives the lifting adjustment screw to raise and lower, thereby adjusting the height of the sliding block. The sliding block then automatically adjusts the height of the corresponding workpiece clamp. This automatic clamping height adjustment device provides convenience for the operator and allows the bottom of the workpiece to be exposed by adjusting its height on the CNC lathe, facilitating the operator's processing of the bottom of the workpiece.

[0013] This utility model uses L-shaped clamping plates or arc-shaped clamping plates as workpiece fixtures. The L-shaped clamping plates can clamp and fix rectangular workpieces, and the arc-shaped clamping plates can clamp and fix cylindrical workpieces. The above-mentioned workpiece fixtures can increase the applicability of CNC lathe positioning fixtures.

[0014] This invention employs a detachable workpiece fixture, which facilitates the replacement of the corresponding workpiece fixture as needed. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a first embodiment of the positioning fixture for a CNC lathe according to the present invention;

[0016] Figure 2 This is a schematic diagram of a second embodiment of the positioning fixture for a CNC lathe according to the present invention;

[0017] Figure 3 This is a partial schematic diagram of a positioning fixture for a CNC lathe according to the present invention;

[0018] Figure 4 This is a schematic diagram of the automatic clamp height adjustment device;

[0019] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0020] Figure 6 This is a schematic diagram of the sliding block.

[0021] The components include: 1. Support base; 2. Protective shell; 3. Drive motor; 4. Lifting and adjusting screw; 5. Sliding block; 6. Horizontal support plate; 7. Workpiece clamp; 8. Guide rail; 9. Engaging protrusion; 10. Engaging groove; 11. Fixing plate; and 12. Pneumatic telescopic rod. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings.

[0023] The present invention will be described in detail with reference to the accompanying drawings.

[0024] In a specific implementation, this utility model provides a positioning fixture for a CNC lathe, including a support base 1, with multiple sets of protective shells 2 extending upward from the upper surface of the support base 1. The support base 1 is equipped with an automatic fixture height adjustment device to facilitate the bottom treatment of workpieces for CNC lathes.

[0025] The automatic height adjustment device for the clamp includes a drive motor 3, a lifting adjustment screw 4, and a sliding block 5 disposed inside the protective housing 2. The output shaft of the drive motor 3 is connected to the bottom end of the lifting adjustment screw 4, and the sliding block 5 is fitted and connected to the outer circumferential surface of the lifting adjustment screw 4.

[0026] A transverse support plate 6 is provided between the sliding blocks 5, and a detachable workpiece clamp 7 is provided on the transverse support plate 6 to clamp and fix the workpiece of the CNC lathe.

[0027] Example 1:

[0028] The workpiece fixture 7 consists of two sets of L-shaped clamps, with the bottom end of the L-shaped clamps contacting the upper surface of the transverse support plate 6.

[0029] In this embodiment, the workpiece can be placed on the corresponding two sets of L-shaped clamps, and the workpiece can be clamped and fixed by adjusting the extension and retraction of the pneumatic telescopic rod 12.

[0030] When the workpiece is too high or too low, it is inconvenient for the operator to handle it. The operator can adjust the clamping height of the workpiece according to their own needs. Start the drive motor 3, and the drive motor 3 drives the corresponding lifting adjustment screw 4 to rotate. As the lifting adjustment screw 4 rotates, the sliding block 5 begins to slide up and down along the lifting adjustment screw 4 to achieve lifting. The lifting and lowering of the sliding block 5 drives the corresponding horizontal support plate 6 and the workpiece clamp 7 to achieve automatic height adjustment. When the workpiece clamp 7 is adjusted to the corresponding height, the drive motor 3 can be turned off.

[0031] In this embodiment, the workpiece clamp 7 consists of two sets of L-shaped clamping plates. The L-shaped clamping plates can be used to clamp and fix rectangular workpieces, workpieces with flat outer walls, etc.

[0032] Example 2:

[0033] The workpiece fixture 7 consists of two sets of arc-shaped clamping plates, with the bottom end of the arc-shaped clamping plates contacting the upper surface of the transverse support plate 6.

[0034] In this embodiment, the workpiece can be placed between the two sets of corresponding arc-shaped clamps, and the workpiece can be clamped and fixed by adjusting the extension and retraction of the pneumatic telescopic rod 12.

[0035] In this embodiment, the workpiece clamp 7 consists of two sets of arc-shaped clamping plates, which can clamp and fix workpieces that are arc-shaped or have an arc-shaped outer wall.

[0036] The specific height adjustment process in this embodiment is the same as in Embodiment 1, and the applicant will not repeat it here.

[0037] To facilitate the lifting and lowering process of the sliding block, the protective housing 2 is equipped with two sets of guide rails 8. Each guide rail 8 has engaging protrusions 9 on both sides, and the bottom of the sliding block 5 has engaging grooves 10 on both sides that engage with the engaging protrusions 9. As the sliding block moves up and down along the lifting adjustment screw, its bottom sides slide along the guide rails 8 through the engagement of the engaging grooves 10 and the engaging protrusions 9.

[0038] To facilitate the clamping and fixing of the workpiece by the workpiece fixture, a fixing plate 11 is installed on the transverse support plate 6. A pneumatic telescopic rod 12 is provided between the fixing plate 11 and the workpiece fixture 7. The end of the pneumatic telescopic rod 12 is fixed to the workpiece fixture 7 by screws.

[0039] As a further explanation of this utility model, each set of workpiece clamps 7 is connected to two sets of pneumatic telescopic rods 12.

[0040] To facilitate fixing the top end of the lifting adjustment screw, the top end of the lifting adjustment screw 4 is fixed inside the protective housing 2.

[0041] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A positioning fixture for a CNC lathe, comprising a support base (1), wherein multiple sets of protective shells (2) extend upward from the upper surface of the support base (1), characterized in that: The support base (1) is equipped with an automatic clamping height adjustment device to facilitate the bottom treatment of workpieces for CNC lathes; The automatic height adjustment device for the clamp includes a drive motor (3), a lifting adjustment screw (4) and a sliding block (5) disposed inside the protective housing (2). The output shaft of the drive motor (3) is connected to the bottom end of the lifting adjustment screw (4), and the sliding block (5) is connected to the outer circumferential surface of the lifting adjustment screw (4). A transverse support plate (6) is provided between the sliding blocks (5), and a detachable workpiece clamp (7) is provided on the transverse support plate (6) to clamp and fix the workpiece for the CNC lathe.

2. The positioning fixture for a CNC lathe according to claim 1, characterized in that: The protective housing (2) is provided with two sets of guide rails (8), and the guide rails (8) are provided with engaging protrusions (9) on both sides. The bottom end of the sliding block (5) is provided with engaging grooves (10) that engage with the engaging protrusions (9).

3. A positioning fixture for a CNC lathe according to claim 1, characterized in that: A fixing plate (11) is installed on the transverse support plate (6). A pneumatic telescopic rod (12) is provided between the fixing plate (11) and the workpiece fixture (7). The end of the pneumatic telescopic rod (12) is fixed to the workpiece fixture (7) by screws.

4. A positioning fixture for a CNC lathe according to claim 3, characterized in that: The workpiece fixture (7) consists of two sets of L-shaped clamps, with the bottom end of the L-shaped clamps contacting the upper surface of the transverse support plate (6).

5. A positioning fixture for a CNC lathe according to claim 3, characterized in that: The workpiece fixture (7) consists of two sets of arc-shaped clamping plates, with the bottom end of the arc-shaped clamping plates in contact with the upper surface of the transverse support plate (6).

6. A positioning fixture for a CNC lathe according to claim 1, characterized in that: Each workpiece fixture (7) is connected to two sets of pneumatic telescopic rods (12).

7. A positioning fixture for a CNC lathe according to claim 1, characterized in that: The top end of the lifting adjustment screw (4) is fixed inside the protective housing (2).

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