Tool clamp for numerical control lathe

Abstract

The utility model relates to the technical field of work fixtures for numerical control lathes, in particular to a work fixture for a numerical control lathe, which comprises a fixed clamping plate and a movable clamping plate, the fixed clamping plate is fixed at the top end of a working table, the movable clamping plate is slidably connected at the top end of the working table, and a track is fixed at the top end of the working table. A sliding groove is formed in the bottom end of the movable clamping plate, the rail is slidably connected into the sliding groove, and a screw is arranged on the surface of the fixed clamping plate. The device has the beneficial effects that firstly, the tubular workpiece is arranged on the clamping assembly arranged on the surface of the fixed clamp shaft in a sleeving mode, the movable clamping plate slides on the workbench along the track through the sliding groove in the direction close to the fixed clamping plate, and therefore the clamping assembly arranged on the surface of the movable clamp shaft is inserted into an inner ring of the tubular workpiece; and finally, the clamping assembly arranged on the surface of the movable clamp shaft is started, so that the two ends of the tubular workpiece can be clamped, and the situation that one end of the tubular workpiece droops, and consequently the machining precision is affected is prevented from occurring.

Description

Technical Field

[0001] The utility model relates to the field of tooling fixtures for numerically controlled lathes, in particular to a tooling fixture for numerically controlled lathes. Background Art

[0002] A CNC lathe is a machine tool that mainly uses a turning tool to perform turning processing on rotating workpieces. The tooling fixture of a CNC lathe is an important equipment used to fix the workpiece during the processing process, ensuring that the workpiece can maintain a stable position and accuracy during processing.

[0003] However, the existing CNC lathe fixture usually only supports one end of the workpiece. When processing a long tubular workpiece away from the end of the work fixture, it is easy to cause the end of the workpiece away from the fixture to sag, resulting in poor processing accuracy. Utility Model Content

[0004] The purpose of the utility model is to provide a fixture for a CNC lathe to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tooling fixture for a CNC lathe, comprising: a fixed splint and a movable splint, the fixed splint is fixed to the top of a workbench, the movable splint is slidably connected to the top of the workbench, a track is fixed to the top of the workbench, a slide groove is provided at the bottom end of the movable splint, the track is slidably connected in the slide groove, a screw is provided on the surface of the fixed splint, the screw is rotatably connected in the screw hole, a fixed clamp shaft is rotatably connected on the surface of the fixed splint, a movable clamp shaft is rotatably connected on the surface of the movable splint, and a clamping assembly is provided at the ends of the fixed clamp shaft and the movable clamp shaft that are close to each other.

[0006] Preferably, a nut limiting groove is provided on the surface of the end of the fixed splint close to the movable splint, a nut is provided on the end of the screw away from the movable splint, and the nut of the screw is rotatably connected in the nut limiting groove. Preferably, a rotating rod seat is fixed on the end of the screw away from the fixed splint, a rotating rod is movably inserted on the surface of the rotating rod seat, and the rotating rod is an "I"-shaped rod structure.

[0007] Preferably, the clamping assembly comprises: a clamp housing, a plurality of groups of electromagnet slots are opened on the surface of the clamp housing, the openings of the plurality of groups of electromagnet slots on the surface of the clamp housing are distributed in a circular pattern, and the plurality of groups of electromagnet slots are interconnected.

[0008] Preferably, an electromagnet with a power supply and a control module is provided in the electromagnet slot, one end of a clamping spring is fixed on the surface of the electromagnet with a power supply and a control module, one end of a metal connecting rod is fixed to the other end of the clamping spring, the other end of the metal connecting rod extends out of the electromagnet slot, and a clamping plate is fixed to the end of the metal connecting rod extending out of the electromagnet slot.

[0009] Preferably, the end of the clamping plate away from the metal connecting rod is arc-shaped.

[0010] Preferably, one end of the fixed fixture shaft away from the movable fixture shaft is connected to the motor of the CNC lathe.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The tooling fixture for a CNC lathe proposed by the utility model first sets a tubular workpiece on a clamping assembly arranged on the surface of a fixed clamp shaft, then starts the clamping assembly to clamp one end of the tubular workpiece, and then by rotating the screw rod, under the action of the screw rod and the screw hole, the movable clamp plate slides along the track on the workbench toward the fixed clamp plate through the slide groove, thereby inserting the clamping assembly arranged on the surface of the movable clamp shaft into the inner ring of the tubular workpiece, and finally starts the clamping assembly arranged on the surface of the movable clamp shaft, so that both ends of the tubular workpiece can be clamped, thereby preventing one end of the tubular workpiece from sagging and affecting the machining accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0016] Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0017] In the figure: workbench 1, fixed clamp plate 2, fixed fixture shaft 3, fixture housing 4, track 5, slide 6,

[0018] Moving clamp plate 7, moving fixture shaft 8, electromagnet slot 9, electromagnet with power supply and control module 10,

[0019] Clamping spring 11, metal connecting rod 12, clamping plate 13, screw rod 14, nut limiting groove 15, screw hole 16, rotating rod seat 17, rotating rod 18. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] See also Figure 1-Figure 4 The utility model provides a technical solution: a tooling fixture for a CNC lathe, comprising: a fixed splint 2 and a movable splint 7, characterized in that: the fixed splint 2 is fixed to the top of a workbench 1, the movable splint 7 is slidably connected to the top of the workbench 1, a track 5 is fixed to the top of the workbench 1, a slide groove 6 is provided at the bottom end of the movable splint 7, the track 5 is slidably connected in the slide groove 6, a screw 14 is provided on the surface of the fixed splint 2, the screw 14 is rotatably connected in the screw hole 16, a fixed fixture shaft 3 is rotatably connected on the surface of the fixed splint 2, a movable fixture shaft 8 is rotatably connected on the surface of the movable splint 7, a clamping assembly is provided on the ends of the fixed fixture shaft 3 and the movable fixture shaft 8 that are close to each other, and the end of the fixed fixture shaft 3 away from the movable fixture shaft 8 is connected to the motor of the CNC lathe.

[0023] During actual use, the tubular workpiece is first sleeved on the clamping assembly provided on the surface of the fixed clamp shaft 3, and then the clamping assembly is started to clamp one end of the tubular workpiece. Then, by rotating the screw 14, under the action of the screw 14 and the screw hole 16, the movable clamp plate 7 slides on the workbench 1 along the track 5 through the slide groove 6 in the direction close to the fixed clamp plate 2, so that the clamping assembly provided on the surface of the movable clamp shaft 8 is inserted into the inner ring of the tubular workpiece, and finally the clamping assembly provided on the surface of the movable clamp shaft 8 is started again, so that both ends of the tubular workpiece can be clamped. When the motor of the CNC lathe drives the fixed clamp shaft 3 to rotate at high speed, the fixed clamp shaft 3 drives the tubular workpiece to rotate at high speed through the clamping assembly, and the movable clamp shaft 8 and the clamping assembly on the surface of the movable clamp shaft 8 also rotate with the tubular workpiece, thereby preventing one end of the tubular workpiece from drooping and affecting the processing accuracy.

[0024] Embodiment 2

[0025] On the basis of Example 1, in order to realize clamping of the tubular workpiece by the clamping assembly, the clamping assembly includes: a clamp housing 4, a plurality of groups of electromagnet grooves 9 are opened on the surface of the clamp housing 4, the openings of the plurality of groups of electromagnet grooves 9 on the surface of the clamp housing 4 are distributed in a circular manner, the plurality of groups of electromagnet grooves 9 are interconnected, an electromagnet 10 with a power supply and a control module is arranged in the electromagnet groove 9, one end of a clamping spring 11 is fixed on the surface of the electromagnet 10 with a power supply and a control module, one end of a metal connecting rod 12 is fixed to the other end of the clamping spring 11, the other end of the metal connecting rod 12 extends out from the electromagnet groove 9, a clamping plate 13 is fixed to the end of the metal connecting rod 12 extending out from the electromagnet groove 9, and the clamping plate 13 is arc-shaped at the end away from the metal connecting rod 12.

[0026] Before the tubular workpiece is sleeved on the clamping assembly, the control module of the electromagnet 10 with power supply and control module controls the power supply to supply power to the electromagnet 10 with power supply and control module, so that the electromagnet 10 with power supply and control module generates suction force on each group of metal connecting rods 12, so that each group of metal connecting rods 12 is close to the electromagnet 10 with power supply and control module and completely retracted into the electromagnet groove 9, at which time the clamping spring 11 is compressed, and then the tubular workpiece is sleeved on the fixture housing 4, and finally the control module of the electromagnet 10 with power supply and control module is de-energized for the electromagnet 10 with power supply and control module, so that the clamping spring 11 pushes one end of the metal connecting rod 12 out of the electromagnet groove 9 under the action of elasticity, and the movement of the metal connecting rod 12 causes each group of clamping plates 13 to be pressed against the inner wall of the tubular workpiece at the same time, and the circumferentially distributed clamping plates 13 cause the inner wall of the tubular workpiece to be uniformly stressed in the circumferential direction, thereby achieving clamping of the tubular workpiece.

[0027] Embodiment 3

[0028] On the basis of Example 2, in order to realize the rotational connection between the screw 14 and the fixed splint 2, a nut limiting groove 15 is opened on the surface of the end of the fixed splint 2 close to the movable splint 7, and a nut is provided on the end of the screw 14 away from the movable splint 7, and the nut of the screw 14 is rotationally connected in the nut limiting groove 15.

[0029] Embodiment 4

[0030] On the basis of the third embodiment, in order to realize more convenient rotation of the screw rod 14, a rotating rod seat 17 is fixed to the end of the screw rod 14 away from the fixed clamping plate 2, and a rotating rod 18 is movably inserted on the surface of the rotating rod seat 17, and the rotating rod 18 is an "I"-shaped rod structure.

[0031] In actual use, the tubular workpiece is first sleeved on the clamping assembly provided on the surface of the fixed clamp shaft 3, and then the clamping assembly is started to clamp one end of the tubular workpiece. Then, by rotating the screw 14, under the action of the screw 14 and the screw hole 16, the movable clamping plate 7 slides along the track 5 on the workbench 1 toward the fixed clamping plate 2 through the slide groove 6, so that the clamping assembly provided on the surface of the movable clamp shaft 8 is inserted into the inner ring of the tubular workpiece. Finally, the clamping assembly provided on the surface of the movable clamp shaft 8 is started again, so that both ends of the tubular workpiece can be clamped. When the motor of the CNC lathe drives the fixed fixture shaft 3 to rotate at a high speed, the fixed fixture shaft 3 drives the tubular workpiece to rotate at a high speed through the clamping assembly, and the mobile fixture shaft 8 and the clamping assembly on the surface of the mobile fixture shaft 8 also rotate with the tubular workpiece, thereby preventing one end of the tubular workpiece from sagging and affecting the machining accuracy; before the tubular workpiece is sleeved on the clamping assembly, the control module of the electromagnet 10 with a power supply and a control module controls the power supply to supply power to the electromagnet 10 with a power supply and a control module, so that the electromagnet 10 with a power supply and a control module produces a force on each group of metal connecting rods 12 The metal connecting rod 12 is sucked by the electromagnet 10 with power supply and control module, and is completely retracted into the electromagnet slot 9. At this time, the clamping spring 11 is compressed, and then the tubular workpiece is sleeved on the fixture housing 4. Finally, the control module of the electromagnet 10 with power supply and control module is powered off for the electromagnet 10 with power supply and control module, so that the clamping spring 11 pushes one end of the metal connecting rod 12 out of the electromagnet slot 9 under the elastic action. The movement of the metal connecting rod 12 makes each group of clamping plates 13 pressed against the inner wall of the tubular workpiece at the same time. The circumferentially distributed clamping plates 13 make the tubular workpiece The inner wall of the tubular workpiece is uniformly stressed in the circumferential direction, thereby achieving clamping of the tubular workpiece; in order to achieve a rotational connection between the screw 14 and the fixed splint 2, a nut limiting groove 15 is provided on the surface of the end of the fixed splint 2 close to the movable splint 7, and a nut is provided on the end of the screw 14 away from the movable splint 7, and the nut of the screw 14 is rotatably connected in the nut limiting groove 15; in order to achieve more convenient rotation of the screw 14, a rotating rod seat 17 is fixed on the end of the screw 14 away from the fixed splint 2, and a rotating rod 18 is movably inserted on the surface of the rotating rod seat 17, and the rotating rod 18 is an "I"-shaped rod structure.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for a CNC lathe, comprising: The fixed splint (2) and the movable splint (7) are characterized in that: the fixed splint (2) is fixed on the top of the workbench (1), the movable splint (7) is slidably connected to the top of the workbench (1), a track (5) is fixed on the top of the workbench (1), a slide groove (6) is provided at the bottom of the movable splint (7), the track (5) is slidably connected in the slide groove (6), a screw (14) is provided on the surface of the fixed splint (2), the screw (14) is rotatably connected in the screw hole (16), a fixed clamp shaft (3) is rotatably connected on the surface of the fixed splint (2), a movable clamp shaft (8) is rotatably connected on the surface of the movable splint (7), and a clamping assembly is provided at the ends of the fixed clamp shaft (3) and the movable clamp shaft (8) that are close to each other.

2. A fixture for a CNC lathe according to claim 1, characterized in that: A nut limiting groove (15) is provided on the surface of one end of the fixed clamping plate (2) close to the movable clamping plate (7), and a nut is provided on the end of the screw rod (14) away from the movable clamping plate (7), and the nut of the screw rod (14) is rotatably connected in the nut limiting groove (15).

3. The fixture for a CNC lathe according to claim 1, characterized in that: A rotating rod seat (17) is fixed to one end of the screw rod (14) away from the fixed clamping plate (2), and a rotating rod (18) is movably inserted on the surface of the rotating rod seat (17), and the rotating rod (18) is in an "I"-shaped rod structure.

4. The fixture for a CNC lathe according to claim 1, characterized in that: The clamping assembly comprises: a clamp housing (4), a plurality of groups of electromagnet slots (9) are provided on the surface of the clamp housing (4), the openings of the plurality of groups of electromagnet slots (9) on the surface of the clamp housing (4) are distributed in a circular pattern, and the plurality of groups of electromagnet slots (9) are interconnected.

5. A fixture for a CNC lathe according to claim 4, characterized in that: An electromagnet (10) with a power supply and a control module is arranged in the electromagnet slot (9), one end of a clamping spring (11) is fixed on the surface of the electromagnet (10) with a power supply and a control module, one end of a metal connecting rod (12) is fixed to the other end of the clamping spring (11), the other end of the metal connecting rod (12) extends out of the electromagnet slot (9), and a clamping plate (13) is fixed to the end of the metal connecting rod (12) extending out of the electromagnet slot (9).

6. A fixture for a CNC lathe according to claim 5, characterized in that: One end of the clamping plate (13) away from the metal connecting rod (12) is arc-shaped.

7. The fixture for a CNC lathe according to claim 1, characterized in that: One end of the fixed fixture shaft (3) away from the movable fixture shaft (8) is connected to the motor of the CNC lathe.

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