CN214162800U - Special spanner of safe type lathe chuck - Google Patents

Abstract

The utility model discloses a safety special wrench for a lathe chuck, which comprises a shell, a rotating rod, a push rod, a square head and a spring; the two sides of the shell are fixedly connected with rotating rods, a push rod is arranged in the shell, the top of the push rod is in a circular sheet shape, a square head is fixedly connected with the bottom of the push rod through threads, and a spring is sleeved outside the push rod in an empty mode. When the user finger pressure makes the square head expose the casing and insert the chuck screw at the push rod top, rotates the bull stick this moment, and the square head rotates along with the casing and realizes the chuck pine or tight, and after the user finger left the push rod, the spring promotion push rod rebound of compressed drove the square head and gets into the casing, makes spanner and chuck automatic break away from. The device is simple to operate and reasonable in design, the wrench is forced to be separated from the chuck by utilizing the operating characteristics, the safety of a machine tool and personnel is ensured, and dangerous accidents caused by throwing the wrench are eliminated.

Description

Special spanner of safe type lathe chuck

Technical Field

The utility model belongs to the technical field of mechanical design and manufacturing process, a safe type lathe chuck special spanner is related to.

Background

The lathe is a machine tool which is very popular in machining, a chuck is mostly adopted for clamping a workpiece, and a special spanner for the chuck is a special tool capable of realizing clamping or loosening of the chuck.

In actual machining, after an operator uses the special chuck wrench, the special chuck wrench is often left at the position of a chuck screw hole, and when a main shaft starts to rotate, the special chuck wrench is thrown out of a lathe due to centrifugal force. The special spanner for the chuck has a certain weight due to the fact that the rotating speed of the main shaft is high, the thrown special spanner for the chuck has large kinetic energy, the lathe is broken by light force, and an operator is injured by heavy force, so that the special spanner for the chuck is a dangerous phenomenon.

Therefore, in order to solve the problems, the safety special wrench for the lathe chuck is designed, the problem of serious potential safety hazard caused by forgetting the wrench due to negligence is fundamentally solved, and equipment damage and casualty results are avoided.

Disclosure of Invention

An object of the utility model is to provide a safe type lathe chuck special spanner to propose among the above-mentioned background art forget chuck spanner because of operator's carelessness and open the machine on the chuck and cause the spanner to throw away and injure equipment or personnel's safety problem by a crashing object.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a safety special wrench for a lathe chuck comprises a shell 1, a rotating rod 2, a push rod 3, a square head 4 and a spring 5; the upper half both sides of casing 1 are fixed connection bull stick 2 respectively, and 1 internally mounted of casing push rod 3, 3 tops of push rod are the disk, and emit casing 1, and bottom thread tightening hookup square head 4, at 3 outside empty cover springs 5 of push rod, 5 tops of spring and 3 top disk contacts of push rod, and 5 bottoms of spring and casing 1 minimum aperture step department contact.

The inside of the shell 1 is of a through hole structure, and the shell is provided with a round hole, a small-diameter round hole and a square hole from top to bottom, wherein the diameter of the round hole is slightly larger than the outer diameter of the spring 5, the diameter of the small-diameter round hole is slightly larger than the push rod 3, and the position of the square hole is slightly larger than the external dimension of the square head 4.

When two ends of the spring 5 are respectively contacted with the push rod 3 of the shell 1, the square head 4 is contracted in the square hole of the shell 1, when the push rod 3 is pressed down, the spring 5 is contracted, and at the moment, the square head 4 extends out of the square hole in the shell 1.

The utility model has the advantages that: the utility model provides a safe type lathe chuck special spanner, the finger must push down the push rod during use makes the square head expose the screw hole that the casing just can insert on the chuck and fastens or the pine unloads the chuck, as long as the finger leaves the push rod, the spring of compression can promote the push rod and make the square head extract from the screw hole on the chuck, spanner and chuck force the separation this moment, avoided leading to the fact the spanner to forget on the chuck because of carelessness, the main shaft is opened and is got rid of the spanner and cause equipment damage and casualties accident, the potential safety hazard has been got rid of, greatly reduced the misoperation risk.

Drawings

Fig. 1 is a structural view of a safety type special wrench for a lathe chuck.

Fig. 2 is a structural view of a safety type wrench housing for lathe chucks.

Detailed Description

The following describes an embodiment of the present invention with reference to the drawings.

As shown in fig. 1 and 2, a safety special wrench for a lathe chuck comprises a shell 1, a rotating rod 2, a push rod 3, a square head 4 and a spring 5, wherein the rotating rod 2 is fixedly connected to two sides of the upper half part of the shell 1, the push rod 3 is installed inside the shell 1, the top of the push rod 3 is in a circular sheet shape and protrudes out of the shell 1, the bottom of the push rod 3 is fixedly connected with the square head 4 through threads, and when the push rod 3 axially slides along the shell 1, the square head can extend out of or retract into a square hole at the bottom end of the shell; the push rod 3 is wrapped in the spring 5 to radially restrain the spring 5, the top end of the spring 5 is in contact with the top wafer of the push rod 3, the bottom end of the spring 5 is in contact with the minimum aperture step of the shell 1, and the spring is restrained in an axial initial state.

The inside through-hole structure that is of casing 1 is round hole, path round hole, square hole respectively from top to bottom, and wherein the round hole diameter slightly is greater than spring 5 external diameter, and path round hole diameter slightly is greater than push rod 3, and square hole position slightly is greater than square head 4 overall dimension, and when push rod 3 axially slided, casing 1 and square head 4, spring 5 had sufficient clearance between casing 1 and the push rod 3, and it is smooth and easy, the unblock to slide each other relatively.

Push rod 3 and 4 threaded connection of square head, through adjusting both screw thread closure degree of depth soon, when guaranteeing 5 both ends of spring respectively with 1 push rod 3 contact of casing, not only the square head 4 contracts in the square hole of casing 1 completely, when push rod 3 moves down moreover, square head 4 can not stretch out the square hole of casing 1 completely when making its top disk reach 1 top of casing, otherwise, can't guarantee the synchronous rotation of square head 4 when bull stick 2 is rotatory to drive casing 1 is rotatory, can't drive the chuck screw.

The coefficient of the spring 5 is moderate, so that the top wafer of the push rod 3 can be easily pressed by fingers to enable the push rod 3 to slide downwards, and the spring 5 which is unloaded can push the push rod 3 to move upwards after the push rod 3 is loosened by the fingers, so that the square head 4 can completely enter the square hole of the shell 1.

The utility model discloses a working process: when the spanner is gripped by both hands of a user, the fingers of one hand press the top of the push rod with strength, so that the push rod slides downwards relative to the shell until the square head exposes the shell, the exposed square head is inserted into the chuck screw, the rotating rod is rotated at the moment, the rotating rod drives the shell and rotates the chuck screw with the square head, the chuck screw is unscrewed or screwed at the moment, and after the spanner is used, the user can directly move the spanner away by hand. If a user forgets to remove the wrench carelessly, as long as the fingers leave the push rod, the compressed spring pushes the push rod to slide upwards to drive the square head to leave the chuck screw and shrink in the shell, and at the moment, the wrench loses the force application point and falls under the action of gravity, so that the wrench is forced to be separated from the chuck.

Claims (3)

1. The utility model provides a safe type lathe chuck special spanner which characterized in that: comprises a shell (1), a rotating rod (2), a push rod (3), a square head (4) and a spring (5); the two sides of the upper half part of the shell (1) are respectively fixedly connected with a rotating rod (2), a push rod (3) is arranged in the shell (1), the top of the push rod (3) is in a wafer shape and protrudes out of the shell (1), the bottom of the push rod is fixedly connected with a square head (4) through threads, and a spring (5) is sleeved outside the push rod (3) in an empty mode; the top end of the spring (5) is contacted with the top wafer of the push rod (3), and the bottom end of the spring (5) is contacted with the minimum aperture step of the shell (1).

2. The safety special wrench for the lathe chuck as claimed in claim 1, wherein: the casing (1) is internally provided with a through hole structure which is respectively provided with a round hole, a small-diameter round hole and a square hole from top to bottom, wherein the diameter of the round hole is slightly larger than the outer diameter of the spring (5), the diameter of the small-diameter round hole is slightly larger than the push rod (3), and the position of the square hole is slightly larger than the external dimension of the square head (4).

3. The safety special wrench for the lathe chuck as claimed in claim 1, wherein: when two ends of the spring (5) are respectively contacted with the push rod (3) of the shell (1), the square head (4) is contracted in the square hole of the shell (1), the spring (5) is contracted when the push rod (3) is pressed down, and the square head (4) extends out of the square hole in the shell (1).

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