Machine tool fixture positioning device

Abstract

The utility model discloses a machine tool fixture positioning device, which belongs to the technical field of positioning devices, and comprises a positioning component used for clamping and fixing a machine tool workpiece, the positioning component comprises a fixing rod and a fixing plate used for clamping and fixing the machine tool workpiece, and the end face of the fixing rod is welded with the fixing plate. Movable plates used for clamping and fixing machine tool workpieces are rotatably connected to the two side faces of the fixed plate through pin shafts, movable frames are welded to the two ends of the side faces of the movable plates, movable rods are movably connected to the inner side walls of the movable frames, limiting rods are welded to the adjacent sides of the two movable rods, and the movable ends of electric push rods are welded to the side faces of the limiting rods; the two electric push rods are arranged on the two sides of the fixing rod. According to the clamping and fixing device, the fixed plate and the movable plate make full contact with the machine tool machined part with the irregular surface, and the clamping and fixing effect of the clamping and fixing device on the machine tool machined part is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to positioning device technical field, especially a machine tool fixture positioning device. BACKGROUND

[0002] The machine tool needs to use the fixture positioning device in the workpiece machining process, the workpiece is clamped and fixed through the fixture positioning device, the existing fixture positioning device is inconvenient for adapting the irregular workpiece to clamp and fix, and it is inconvenient to adjust the angle of the clamping plate, so that the clamping plate and the irregular workpiece on the surface are not fully contacted, and the clamping is unstable, which reduces the clamping and fixing effect of the fixture positioning device on the workpiece.

[0003] In the related art, through retrieval, a kind of machine tool fixture positioning device (announcement number CN219617231U) scheme is found, including fixed seat and clamping assembly, clamping assembly includes fixed clamping block and adjusting clamping block, recess is set up on fixed clamping block, adjusting clamping block is set in fixed clamping block, threaded hole is set up on fixed clamping block, adjusting screw rod is installed on the side of adjusting clamping block by mounting bearing, adjusting screw rod is engaged in threaded hole, concentric positioning assembly is arranged in fixed seat, concentric positioning assembly includes control cylinder, control disc and linkage rod, control cavity and installation cavity are set up in fixed seat, the utility model can guarantee that bearing can be stably fixed transversely and vertically, in turn can guarantee good fixity, but the device does not consider clamping and fixing the workpiece on the surface irregular, cause the workpiece clamping instability phenomenon, reduce the clamping and fixing effect of fixture positioning device on workpiece. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of machine tool fixture positioning device to solve the problems raised in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of machine tool fixture positioning device, comprising:

[0006] Positioning assembly for clamping and fixing machine tool workpiece, positioning assembly includes fixed rod and the fixed plate for clamping and fixing machine tool workpiece, fixed rod end surface is welded with fixed plate, the fixed plate both sides are rotatably connected with the movable plate for clamping and fixing machine tool workpiece by pin shaft, movable plate side surface both ends are welded with movable frame, movable frame inner wall is movably connected with movable rod, two movable rods adjacent side are welded with limit rod, the side surface of limit rod is welded with the moving end of electric push rod, two electric push rods are set on the two sides of fixed rod;

[0007] Bottom plate for placing machine tool workpiece, positioning assembly is set on the top surface of bottom plate, and the bottom surface of fixed plate and movable plate is slidably connected with bottom plate.

[0008] Preferably, the bottom plate is fixedly connected with connecting frames on both sides, and one of the connecting frames is rotatably connected with a threaded rod with reverse threads on the inner side wall.

[0009] Preferably, the threaded rod is threadedly connected with two threaded blocks with reverse threads, and the side surfaces of the two threaded blocks are slidably connected with the inner side walls of the connecting frames.

[0010] Preferably, the inner side wall of the other connecting frame is welded with a sliding rod, and the sliding rod is slidably connected with two sliding blocks.

[0011] Preferably, the side surfaces of the sliding blocks are slidably connected with the inner side walls of the connecting frames, and the top surfaces of the threaded blocks and the sliding blocks are welded with L-shaped limiting plates.

[0012] Preferably, the adjacent side surfaces of the two limiting plates are welded with connecting plates, and the bottom surfaces of the two connecting plates are slidably connected with the bottom plate.

[0013] Preferably, the side surfaces of the connecting plates are respectively provided with a fixed rod and two electric push rods, and the end surface of the threaded rod is connected with the output shaft of a rotary motor through a shaft coupling.

[0014] Preferably, the fixed end of the rotary motor is mounted on the end surface of the connecting frame.

[0015] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0016] The machine tool clamp positioning device is moved centripetally through the two positioning assemblies, the relative distance between the two fixed plates is shortened, the machine tool workpiece placed on the top of the bottom plate is preliminarily clamped and fixed, the surface of the machine tool workpiece is irregular, the clamping contact is not tight, the clamp positioning device is unstable in clamping the workpiece, the electric push rod is powered to drive the limiting rod to move during the movement of the moving end of the electric push rod, the movable rod is relatively rotated and moved along the inner side wall of the movable frame under the connecting action of the limiting rod, the movable plate is relatively rotated with the fixed plate, the movable plate is in full contact with the irregular surface workpiece, and the clamping and fixing effect of the clamp positioning device on the workpiece is improved.

[0017] The machine tool clamp positioning device is provided with a rotating motor, which provides power to rotate the output shaft of the rotating motor, drives the threaded rods with reverse threads to rotate, and then drives the two threaded blocks with reverse threads to move reversely along the threaded path of the threaded rods, so that the two connecting plates move reversely relative to each other during transmission, and the relative distance between the two positioning assemblies is controlled, and the workpiece placed on the top of the bottom plate is clamped and fixed at the center of the bottom plate under the clamping action of the positioning assemblies, the clamping and positioning precision of the clamp positioning device for the workpiece is improved, the machining of the machine tool for the workpiece is provided, the clamping and positioning precision of the clamp positioning device for the workpiece is improved, the sliding block is arranged to move along the path of the sliding rod, and the position movement stability of the connecting plate is improved under the connecting action of the limiting plate. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0019] Figure 1 It is a structural schematic view of the present application.

[0020] Figure 2 It is a structural schematic view of the positioning assembly of the present application.

[0021] Figure 3 It is a structural schematic view of the present application. Figure 2 It is an enlarged view of structure A in the middle.

[0022] Figure 4 It is a structural schematic view of the connecting plate of the present application.

[0023] Explanation of reference signs:

[0024] In the figure: 1, bottom plate; 2, positioning assembly; 3, fixed rod; 4, fixed plate; 5, movable plate; 6, movable frame; 7, limiting rod; 8, movable rod; 9, electric push rod; 10, connecting plate; 11, connecting frame; 12, threaded rod; 13, threaded block; 14, sliding rod; 15, sliding block; 16, limiting plate; 17, rotating motor. DETAILED DESCRIPTION

[0025] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail in order to avoid unnecessarily complicating the present application.

[0026] Unless the context clearly requires otherwise, throughout the description, the terms "comprise", "comprising", "attached", "connected", "coupled", "include" and / or "including" will be understood to be open terms, i.e., meaning "including, but not limited to", and thus should be affixed to limit the meaning to an open, non- limiting meaning that also means "and / or" and "one or more of.

[0027] The connection mode can adopt existing modes such as bonding, welding, bolt connection, etc., and the actual needs are accurate.

[0028] In order to solve the problem that the positioning device of the machine tool clamp is prone to unstable clamping when clamping and fixing the workpiece with irregular surface, thereby reducing the clamping and fixing effect of the device on the workpiece, please refer to Figures 1 to 4 , the structure of the device body comprises:

[0029] The positioning assembly 2 for clamping and fixing the machine tool workpiece is moved centripetally to realize clamping and fixing of the machine tool workpiece. The positioning assembly 2 comprises a fixed rod 3 and a fixed plate 4 for clamping and fixing the machine tool workpiece. Two fixed plates 4 preliminarily clamp and fix the machine tool workpiece. The end surface of the fixed rod 3 is welded with the fixed plate 4. The two sides of the fixed plate 4 are rotatably connected with a movable plate 5 for clamping and fixing the machine tool workpiece through a pin shaft. The relative rotation of the two movable plates 5 and one fixed plate 4 is realized, so that the movable plate 5 further clamps and fixes the machine tool workpiece. The movable frame 6 is welded on the two ends of the side surface of the movable plate 5. The movable rod 8 is movably connected with the inner side wall of the movable frame 6.

[0030] The two movable rods 8 are adjacent to the side of the limiting rod 7. The moving end of the electric push rod 9 is welded on the side of the limiting rod 7. The two electric push rods 9 are arranged on the two sides of the fixed rod 3. The electric push rod 9 provides power, so that the moving end of the electric push rod 9 moves during the movement of the limiting rod 7. Under the connecting action of the limiting rod 7, the movable rod 8 rotates and moves along the inner wall of the movable frame 6, so that the movable plate 5 rotates relative to the fixed plate 4. The angle of the movable plate 5 is adjusted to adapt to the clamping and fixing of the irregular surface workpiece. The movable plate 5 and the fixed plate 4 are in full contact with the machine tool workpiece, so as to strengthen the clamping and fixing effect of the clamp positioning device on the machine tool workpiece.

[0031] The bottom plate 1 is used for placing machine tool workpieces, and the positioning assembly 2 is arranged on the top surface of the bottom plate 1. The bottom surfaces of the fixed plate 4 and the movable plate 5 are slidably connected with the bottom plate 1. The bottom plate 1 provides support for the fixed plate 4 and the movable plate 5, and improves the position stability of the fixed plate 4 and the movable plate 5.

[0032] The two side surfaces of the bottom plate 1 are fixedly connected with the connecting frames 11. The adjacent side surfaces of the two connecting frames 11 are fixedly connected with the bottom plate 1. The inner side wall of one of the connecting frames 11 is rotatably connected with the threaded rod 12 with reverse threads. The connecting frame 11 is arranged to fix the rotating position of the threaded rod 12. The threaded rod 12 is threadedly connected with the two threaded blocks 13 with reverse threads. When the threaded rod 12 rotates, the two threaded blocks 13 with reverse threads move in the reverse direction along the threaded path of the threaded rod 12. The side surfaces of the two threaded blocks 13 are slidably connected with the inner side wall of the connecting frame 11, so that the two threaded blocks 13 move along the inner side wall of the connecting frame 11. The threaded blocks 13 are prevented from rotating synchronously with the rotation of the threaded rod 12, and the stability of the functional structure of the device is improved.

[0033] The inner side wall of the other connecting frame 11 is welded with the slide rod 14. The connecting frame 11 is arranged to provide support and fixing for the slide rod 14. The slide rod 14 is slidably connected with the two sliding blocks 15, so that the two sliding blocks 15 move along the path of the slide rod 14. The moving path of the sliding block 15 is preliminarily fixed. The side surface of the sliding block 15 is slidably connected with the inner side wall of the connecting frame 11, so that the moving path of the sliding block 15 is further fixed. The position stability of the sliding block 15 is improved. The top surfaces of the threaded blocks 13 and the sliding blocks 15 are welded with the L-shaped limiting plates 16. The adjacent sides of the two limiting plates 16 are welded with the connecting plates 10. The two limiting plates 16 welded with the connecting plates 10 are respectively located at the top of the threaded blocks 13 and the sliding blocks 15. During transmission, the synchronous reverse movement of the two connecting plates 10 is facilitated. The bottom surfaces of the two connecting plates 10 are slidably connected with the bottom plate 1.

[0034] The side surfaces of the connecting plates 10 are respectively provided with the fixed rod 3 and the two electric push rods 9. The fixed ends of the two electric push rods 9 are detachably connected with the connecting plates 10 through bolts. One end of the fixed rod 3 is welded with the connecting plate 10. Under the cooperation of the positioning assembly 2, the machine tool workpiece is clamped and fixed at the central part of the bottom plate 1. The clamping and positioning precision of the jig positioning device for the machine tool workpiece is improved. The end surface of the threaded rod 12 is connected with the output shaft of the rotating motor 17 through a shaft coupling. The fixed end of the rotating motor 17 is mounted on the end surface of the connecting frame 11. The fixed end of the rotating motor 17 is detachably connected with the end surface of the connecting frame 11 through bolts.

[0035] The electric push rod 9 and the rotary motor 17 are prior arts, and the working principles, sizes and models are irrelevant to the functions of the present application, so no more description is made, the control mode of the present application is controlled by the controller, the control circuit of the controller can be realized by simple programming of the person skilled in the art, the power supply also belongs to the common knowledge in the art, and the present application is mainly used for protecting the mechanical device, so the control mode and the circuit connection of the present application will not be explained in detail.

[0036] Working principle

[0037] The machine tool fixture positioning device, when used by the user, places the machine tool workpiece on the top surface of the bottom plate 1, starts the rotary motor 17, and the output shaft of the rotary motor 17 rotates to drive the threaded rod 12 to rotate, and then the two threaded blocks 13 with opposite threads move along the threaded path of the threaded rod 12, under the connecting action of the limiting plate 16, the two connecting plates 10 are synchronously and reversely moved, and the two positioning assemblies 2 are moved to the specified position to clamp and fix the machine tool workpiece, and the sliding block 15 arranged is moved along the path of the sliding rod 14.

[0038] The electric push rod 9 is started, and the moving end of the electric push rod 9 moves to drive the limiting rod 7 to move in position, under the connecting action of the limiting rod 7, the movable rod 8 rotates and moves along the inner side wall of the movable frame 6, the relative rotation of the movable plate 5 and the fixed plate 4 is realized, the angle of the movable plate 5 is adjusted, the movable plate 5 and the fixed plate 4 are fully contacted with the irregular surface of the machine tool workpiece, and then the fixture positioning device clamps and fixes the machine tool workpiece.

[0039] It should be noted that, in the present document, relational terms such as one and another and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying that any such entity or action is either analogous or not analogous to the other. Moreover, the terms "comprise", "comprises", "comprising", "include", "includes" or "including" are used herein to be had the meaning of non-exclusivity, such that a process, method, article, or apparatus that comprises a list of elements is not required to only comprise those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. In other words, it is not required that every aspect of a process, method, article, or apparatus includes the recited elements, but it is enough that the inclusion of such elements provides some benefit or functionality to the process, method, article, or apparatus.

[0040] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A machine tool fixture positioning device, characterized in that: include: A positioning assembly (2) for clamping and fixing a machine tool workpiece, the positioning assembly (2) comprises a fixing rod (3) and a fixing plate (4) for clamping and fixing the machine tool workpiece, the end face of the fixing rod (3) is welded to the fixing plate (4), the two side faces of the fixing plate (4) are rotatably connected to a movable plate (5) for clamping and fixing the machine tool workpiece via a pin shaft, both ends of the side face of the movable plate (5) are welded to a movable frame (6), the inner side wall of the movable frame (6) is movably connected to a movable rod (8), adjacent sides of the two movable rods (8) are welded to a limiting rod (7), the side face of the limiting rod (7) is welded to the movable end of an electric push rod (9), and the two electric push rods (9) are arranged on both sides of the fixing rod (3); A base plate (1) is used for placing machine tool workpieces, the positioning assembly (2) is arranged on the top surface of the base plate (1), and the bottom surfaces of the fixed plate (4) and the movable plate (5) are both slidably connected to the base plate (1).

2. A machine tool fixture positioning device according to claim 1, characterized in that: Connecting frames (11) are fixedly connected to the two side surfaces of the bottom plate (1), and a threaded rod (12) with reverse threads is rotatably connected to the inner side wall of one of the connecting frames (11).

3. The machine tool fixture positioning device according to claim 2, characterized in that: The threaded rod (12) is threadedly connected to two threaded blocks (13) with reverse threads, and the side surfaces of the two threaded blocks (13) are slidably connected to the inner side wall of the connecting frame (11).

4. A machine tool fixture positioning device according to claim 3, characterized in that: A sliding rod (14) is welded to the inner side wall of the other connecting frame (11), and the sliding rod (14) is slidably connected to two sliding blocks (15).

5. The machine tool fixture positioning device according to claim 4, characterized in that: The side surface of the slider (15) is slidably connected to the inner wall of the connecting frame (11), and the top surfaces of the threaded block (13) and the slider (15) are both welded with L-shaped limiting plates (16).

6. The machine tool fixture positioning device according to claim 5, characterized in that: A connecting plate (10) is welded to adjacent sides of the two limiting plates (16), and the bottom surfaces of the two connecting plates (10) are slidably connected to the bottom plate (1).

7. The machine tool fixture positioning device according to claim 6, characterized in that: A fixing rod (3) and two electric push rods (9) are respectively provided on the side surfaces of the connecting plate (10), and the end surface of the threaded rod (12) is connected to the output shaft of the rotating motor (17) through a coupling.

8. The machine tool fixture positioning device according to claim 7, characterized in that: The fixed end of the rotating motor (17) is mounted on the end surface of the connecting frame (11).

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