CN206286578U - A CNC machine tool fixture - Google Patents

Abstract

The utility model discloses a numerical control machine tool clamp, the structure of which comprises a chuck base, a guide rail groove positioning frame, clamp claws, a propelling screw rod, a through hole in a workpiece and a positioning frame locking screw, wherein the chuck base is provided with guide rail grooves, the number of the guide rail grooves is four, the guide rail groove positioning frame is arranged in the guide rail grooves, the clamp claws are arranged above the guide rail groove positioning frame, the propelling screw rod is arranged in the guide rail grooves, the through hole in the workpiece is arranged at the center of the chuck base, the guide rail groove positioning frame is locked and connected with the guide rail grooves through the positioning frame locking screw, the guide rail groove positioning frame is provided with an upper surface screw hole, a claw guide rail, a side screw hole and a propelling screw rod positioning hole, the upper surface screw hole is arranged above the guide rail groove positioning frame, the claw guide rail is arranged at the inner side of the guide rail groove positioning frame, through being equipped with apart from protection device, realized that this anchor clamps can stop to feed and the main shaft is rotatory before hitting the sword, played the guard action to the anchor clamps.

Description

A CNC machine tool fixture

technical field

The utility model relates to a fixture for a numerically controlled machine tool, which belongs to the field of fixtures.

Background technique

The device used to fix the processing object in the process of mechanical manufacturing so that it occupies the correct position to accept construction or inspection, also known as fixture. In a broad sense, any process in the process, the device used to install the workpiece quickly, conveniently and safely, can be called a fixture. Such as welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc. Among them, machine tool fixtures are the most common, often referred to as fixtures. When processing a workpiece on a machine tool, in order to make the surface of the workpiece meet the technical requirements such as the size, geometric shape, and mutual position accuracy with other surfaces specified in the drawing, the workpiece must be installed (positioned) and clamped (clamped) before processing. . The fixture usually consists of a positioning element (to determine the correct position of the workpiece in the fixture), a clamping device, a tool setting guide element (to determine the relative position of the tool and the workpiece or to guide the direction of the tool), and an indexing device (to enable the workpiece to be positioned in one installation. Complete the processing of several stations, there are two types of rotary indexing device and linear moving indexing device), connecting elements and clamp body (fixture base) and so on.

The prior art discloses that the application number is: 201520772362.2, and the utility model discloses a fixture for processing workpieces, including: a bottom plate, a bottom mold of the fixture, and a cylinder; the bottom mold of the fixture is arranged in the middle of the bottom plate, and the The fixture bottom mold is used to carry the workpiece; there are multiple cylinders, and a plurality of the cylinders are arranged on the bottom plate around the fixture bottom mold, and the end of the cylinder away from the bottom plate is provided with a cylinder pressure The cylinder is used to drive the pressure jaw of the cylinder to press down so as to clamp the workpiece. This kind of fixture adopts the bottom mold of the fixture to carry the workpiece, and a plurality of cylinders are arranged around the bottom mold of the fixture, and the cylinder pressure claws are driven down by the cylinders to clamp the workpiece. Compared with the traditional top-up fixture, this kind of fixture is a downward-pressing fixture, and it can still be positioned better when the power of the cylinder is insufficient, so that it is not easy to cause positioning errors. However, this fixture has no distance protection device, and there is no way to stop the feed and spindle rotation before the tool hits.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a fixture for a numerically controlled machine tool. , the chuck base is provided with guide rail grooves, the guide rail grooves are provided with four, the guide rail groove positioning frames are arranged in the guide rail grooves, the clamp claws are arranged above the guide rail groove positioning frames, and the pushing screw Set inside the guide rail groove, the through hole in the workpiece is set in the center of the chuck base, the guide rail groove positioning frame is locked and connected with the guide rail groove through the positioning frame locking screw, and the guide rail groove positioning frame is provided with screw holes on the upper surface , claw guide rail, side screw hole, and push screw positioning hole, the upper surface screw hole is set above the guide rail groove positioning frame, the claw guide rail is set inside the guide rail groove positioning frame, and the side screw hole is set in the guide rail groove On the side of the positioning frame, the positioning hole of the propulsion screw is connected with the propulsion screw, the locking screw of the positioning frame is set in the screw hole on the side and the screw hole on the upper surface, and the claw of the clamp is provided with a distance protection device and an inner circle clamping The pattern, the outer circle clamping pattern, and the feed screw teeth, the distance protection device is set above the clamp jaw, the inner circle clamping pattern is set in front of the fixture jaw, and the outer circle clamping pattern is set on the fixture jaw At the rear of the claw, the feed screw teeth are arranged under the jaws of the fixture, the push screw is provided with a push thread, and the push thread is arranged on the surface of the push screw, and the distance protection device is provided with a distance sensor, and the distance sensor is set inside the distance guard.

Further, the propulsion screw is provided with a dismounting wrench positioning plane.

Further, the dismounting wrench positioning plane is set on the surface of the propulsion screw.

The utility model provides a fixture of a numerically controlled machine tool. By being provided with a distance protection device, the fixture can stop the feed and the rotation of the main shaft before the tool collides, so as to protect the fixture.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Fig. 1 is the structural representation of a kind of numerically controlled machine tool fixture of the present utility model;

Fig. 2 is the structural representation of the guide rail slot positioning frame of the present invention;

Fig. 3 is a structural schematic diagram of the clamp jaw of the utility model;

Fig. 4 is the structural representation of the utility model propulsion screw;

Fig. 5 is the structural representation of distance sensor of the present utility model;

Fig. 6 is the enlarged schematic diagram of structure A of the present utility model;

Fig. 7 is an enlarged schematic diagram of structure B of the present invention.

In the figure: Chuck base-1, guide rail groove positioning frame-2, fixture claw-3, propulsion screw rod-4, through hole in workpiece-5, positioning frame locking screw-6, guide rail groove-10, upper surface Screw hole-20, claw guide rail-21, side screw hole-22, push screw positioning hole-23, distance protection device-30, inner circle clamping pattern-31, outer circle clamping pattern-32, feed screw -33, advancing thread-40, distance sensor-300, disassembly wrench positioning plane-41.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

Please refer to Figures 1-7, the utility model provides a technical solution: a CNC machine tool fixture, its structure includes a chuck base 1, a guide rail groove positioning frame 2, a fixture jaw 3, a propulsion screw 4, and a through hole in the workpiece 5. Positioning frame locking screw 6, said chuck base 1 is provided with guide rail groove 10, said guide rail groove 10 is provided with four, said guide rail groove positioning frame 2 is arranged in guide rail groove 10, said clamp clamp Claw 3 is arranged on the guide rail groove positioning frame 2 top, and described propulsion screw rod 4 is arranged on the inside of guide rail groove 10, and through hole 5 in described workpiece is arranged at the center of chuck base 1, and described guide rail groove positioning frame 2 is locked by the positioning frame. The tightening screw 6 is locked and connected with the guide rail groove 10. The guide rail groove positioning frame 2 is provided with an upper surface screw hole 20, a claw guide rail 21, a side screw hole 22, and a push screw positioning hole 23. The upper surface screw hole 20 is located on the Above the guide rail groove positioning frame 2, the claw guide rail 21 is arranged on the inner side of the guide rail groove positioning frame 2, the side screw hole 22 is arranged on the side of the guide rail groove positioning frame 2, and the push screw positioning hole 23 is connected with the push screw rod 4 , the positioning frame locking screw 6 is set in the side screw hole 22 and the upper surface screw hole 20, the clamp jaw 3 is provided with a distance protection device 30, an inner circle clamping pattern 31, an outer circle clamping pattern 32, Feed screw teeth 33, the distance protection device 30 is arranged above the clamp jaw 3, the inner circle clamping pattern 31 is arranged in front of the fixture jaw 3, and the outer circle clamping pattern 32 is arranged on the fixture jaw 3 At the rear, the feed screw 33 is located below the clamp jaw 3, the advancing screw 4 is provided with a advancing thread 40, the advancing thread 40 is arranged on the surface of the advancing screw 4, and the distance protection device 30 is provided with a distance sensor 300, the distance sensor 300 is set inside the distance protection device 30, the push screw 4 is provided with a disassembly wrench positioning plane 41, and the disassembly wrench positioning plane 41 is set on the surface of the propulsion screw 4.

When in use, the clamp claw 3 is driven by the screw rod 4 to perform clamping and loosening actions. When the distance between the cutter head and the protection device 30 is less than 1mm during the feeding process, the clamp will issue an emergency stop command.

The basic principles and main features of the utility model and the advantages of the utility model have been shown and described above. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the utility model The present utility model can be realized in other specific forms without the spirit or essential features. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (3)

1. a kind of numerical control machine tool clamp, it is characterised in that：Its structure includes chuck pedestal (1), guide-track groove posting (2), fixture Through hole (5), posting lock screw (6) in claw (3), augering screw (4), workpiece, the chuck pedestal (1) are provided with guide-track groove (10), the guide-track groove (10) is provided with four, and the guide-track groove posting (2) is interior located at guide-track groove (10), the fixture claw (3) located at guide-track groove posting (2) top, the augering screw (4) is internal located at guide-track groove (10), through hole in the workpiece (5) located at chuck pedestal (1) center, the guide-track groove posting (2) is locked by posting lock screw (6) and guide-track groove (10) Fixed connection, the guide-track groove posting (2) is provided with upper surface screw hole (20), claw guide rail (21), side screw hole (22), pushes away Enter screw rod location hole (23), the upper surface screw hole (20) is located at guide-track groove posting (2) top, the claw guide rail (21) Located at guide-track groove posting (2) inner side, the side screw hole (22) is located at guide-track groove posting (2) side, the propulsion spiral shell Bar location hole (23) is connected with augering screw (4), and the posting lock screw (6) is located at side screw hole (22) and upper table In face screw hole (20), the fixture claw (3) is provided with distance protection equipment (30), inner circle and clamps decorative pattern (31), cylindrical clamping Decorative pattern (32), feeding screw thread (33), the distance protection equipment (30) clamp flower located at fixture claw (3) top, the inner circle , located at fixture claw (3) front, cylindrical clamping decorative pattern (32) is located at fixture claw (3) rear, the feeding spiral shell for line (31) Located at fixture claw (3) lower section, the augering screw (4) is provided with propulsion screw thread (40) to tooth (33), and propulsion screw thread (40) sets In augering screw (4) surface, the distance protection equipment (30) is provided with range sensor (300), the range sensor (300) It is internal located at distance protection equipment (30).

2. a kind of numerical control machine tool clamp according to claim 1, it is characterised in that：The augering screw (4) is provided with dismounting Spanner positions plane (41).

3. a kind of numerical control machine tool clamp according to claim 2, it is characterised in that：The dismantling spanner positions plane (41) Located at augering screw (4) surface.