CN216608166U

CN216608166U - Locking tool for screw locking nut

Info

Publication number: CN216608166U
Application number: CN202122415603.6U
Authority: CN
Inventors: 罗建忠; 谭原; 柏林; 柳亚洲; 王军亮
Original assignee: Baoji Shanqi Jinggong Intelligent Equipment Co ltd
Current assignee: Baoji Shanqi Jinggong Intelligent Equipment Co ltd
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2022-05-27
Anticipated expiration: 2031-10-08

Abstract

The utility model discloses a locking tool for a screw locking nut, which is detachably fastened on the peripheral surface of the outer side of a screw extending-out fastening assembly and is provided with a driving mechanism for driving the screw to rotate. The locking tool comprises a locking barrel which is detachably sleeved at the end part of the periphery of the screw rod, and a first locking part and a second locking part which are symmetrical are axially divided into a certain length range at two end parts of the locking barrel. Through the supporting effect of locking frock, the drive lead screw is rotatory, and the fastening assembly of tight fixed position subassembly of being convenient for, and through actuating mechanism, can be more laborsaving drive the lead screw rotation through the locking frock, solve the lead screw tip on the whole and be difficult to the application of force, and cause the problem that can not fasten the assembly. The arc-shaped anti-slip ring arranged on the inner wall of the locking cylinder can further increase the tightly-attaching pressing force with the outer peripheral surface of the screw rod to limit the problem that the locking cylinder slides relative to the outer peripheral surface of the screw rod. And it also has the area of contact of increase and lead screw outer peripheral surface, and then increases contact friction and locking effort.

Description

Locking tool for screw locking nut

Technical Field

The utility model relates to the technical field of machine tool lead screw assembly, in particular to a locking tool for a lead screw locking nut.

Background

The screw rod is the most commonly used transmission element on tool machinery and precision machinery, has the main function of converting rotary motion into linear motion or converting torque into axial repeated acting force, and has the characteristics of high precision, reversibility and high efficiency. Due to the small frictional resistance, the gear-type friction reducer is widely applied to various technical fields such as various industrial equipment (such as machine tool transmission) and precision instruments.

The lead screw of assembly on the lathe generally assembles on the support on the lathe base (the description is shown in the attached figure 1), because the lead screw rotates to wear to establish in the support, consequently, general fastening positioning subassembly thread bush is established at lead screw both sides tip, and because the lead screw tip is the cylinder structure, does not have suitable application of force point, consequently fastening positioning subassembly is difficult to fastening the cover and is established at the both ends of lead screw, under the vibration effect of lathe for a long time, can lead to not hard up of lead screw mounted position, influences its transmission precision.

Disclosure of Invention

Aiming at the existing problems, the utility model aims to provide a locking tool for a screw locking nut, which can drive a screw to rotate, is convenient for fastening and assembling a fastening and positioning assembly, and solves the problems that the end part of the screw is difficult to apply force and the fastening and assembling cannot be realized.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a lead screw is locking frock for lock nut, the lead screw rotates and sets up on the support at machine tool base both ends, and the lead screw both ends all stretch out the support outside, the lead screw stretches out the both ends of support all are equipped with fastening position subassembly, its characterized in that: the locking tool is detachably fastened on the peripheral surface of the outer side of the fastening positioning component, where the lead screw extends out, and the locking tool is provided with a driving mechanism for driving the lead screw to rotate.

Preferably, the locking tool comprises a locking barrel which is detachably sleeved at the end part of the periphery of the screw rod, a first locking part and a second locking part which are symmetrical are respectively divided into a certain length range at two end parts of the locking barrel along the axial direction, a locking gap is reserved between the first locking part and the second locking part, and fastening thread through holes are correspondingly formed in the radial directions of the first locking part and the second locking part.

Preferably, a radial locking hole is formed in one side, far away from the end part of the locking cylinder, of the locking gap in a penetrating manner.

Preferably, the driving mechanism is a driving hole arranged at the middle position of the locking cylinder along the circumferential direction at intervals.

Preferably, symmetrical embedded grooves are formed in the first locking portion and the second locking portion, and arc-shaped anti-skidding rings are embedded into each embedded groove.

Preferably, the width from the inner wall surface to the outer wall surface of the arc-shaped anti-slip ring gradually increases from the center position thereof toward the two ends in the circumferential direction, and the axial thickness of the arc-shaped anti-slip ring gradually decreases toward the outer end of the locking cylinder.

The utility model has the beneficial effects that: through the supporting effect of locking frock, the drive lead screw is rotatory, and the fastening assembly of the tight locating component of being convenient for, and through actuating mechanism, can be more laborsaving drive the lead screw rotation through the locking frock, solve the lead screw tip on the whole and be difficult to the application of force, and cause the problem that can not fasten the assembly. The arc-shaped anti-slip ring arranged on the inner wall of the locking cylinder can further increase the tightly-attaching pressing force with the outer peripheral surface of the screw rod to limit the problem that the locking cylinder slides relative to the outer peripheral surface of the screw rod. And it also has the area of contact of increase and lead screw outer peripheral surface, and then increases contact friction and locking effort.

Drawings

FIG. 1 is a schematic view of the locking cylinder of the present invention assembled to the end of a lead screw.

FIG. 2 is an enlarged schematic view of the locking cylinder of FIG. 1 according to the present invention.

FIG. 3 is a top view of FIG. 2 in accordance with the present invention.

Fig. 4 is a side view of the utility model of fig. 3.

Fig. 5 is a side view of the utility model of fig. 2.

FIG. 6 is an axial cross-sectional view of the anti-slip ring according to the present invention.

FIG. 7 is a schematic view of the arc-shaped anti-slip ring of the present invention being deformed and rotated to be closely attached to the surface of the screw rod.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following description will be made with reference to the accompanying drawings and embodiments.

Referring to the locking tool for the lead screw locking nut shown in fig. 1-7, a lead screw 10 is rotatably arranged on supports 30 at two ends of a machine tool base 20, two ends of the lead screw 10 extend out of the outer sides of the supports 30, and two ends of the lead screw 10 extending out of the supports 30 are respectively sleeved with a fastening positioning assembly 40 (as shown in fig. 1). The screw 10 is rotatably fixed on the machine tool base 20 through a bracket 30, and the end part of the screw 10 extends out of the bracket 30 and is preferably connected with a servo motor to drive the rotation precision of the screw. The portion of the screw 10 located outside the bracket 30 is generally sleeved with a fastening and positioning component for fastening and positioning the screw 10 and the bracket, so as to maintain the transmission accuracy of the screw 10. This use is novel solves lead screw 10 and is difficult to with the problem of fastening positioning subassembly fastening assembly through providing a locking frock to improve the fastening nature of lead screw 10 assembly.

Specifically, as shown in fig. 1, the locking tool is detachably fastened to the outer peripheral surface of the fastening positioning component, where the lead screw 10 extends out of the outer peripheral surface of the fastening positioning component, and the locking tool has a driving mechanism for driving the lead screw 10 to rotate. Through the supporting effect of locking frock, drive lead screw 10 is rotatory, the fastening assembly of the tight fixed position subassembly of being convenient for, and through actuating mechanism, can be more laborsaving drive lead screw 10 rotatory through locking frock, solve lead screw 10 tip on the whole and be difficult to the application of force, and cause the problem that can not fasten the assembly.

Specifically, as shown in fig. 1-2, the locking tool includes a locking cylinder 1 detachably sleeved at the end portion of the outer periphery of the screw 10, a certain length range of two end portions of the locking cylinder 1 is divided into a first locking portion 11 and a second locking portion 12 which are symmetrical along the axial direction, and the diameter of an inner hole formed between inner walls of the first locking portion 11 and the second locking portion 12 is preferably slightly larger than the outer diameter of the outer end of the screw 10, so that the locking cylinder 1 is quickly sleeved at the outer end portion of the screw 10. A locking gap 101 is reserved between the first locking part 11 and the second locking part 12, and fastening threaded through holes 102 are correspondingly formed in the radial directions of the first locking part 11 and the second locking part 12. After the locking cylinder 1 is sleeved on the outer end portion of the screw rod 1, preferably, a locking bolt (indicated by reference numeral 3 in the figure) is arranged in the fastening thread through hole 102 in a penetrating manner, and the first locking portion 11 and the second locking portion 12 are driven to deform relative to the body of the locking cylinder 1 to be close to each other and to be tightly attached to the circumferential surface of the outer end of the screw rod 1, so that the locking cylinder 1 and the screw rod 10 form an integrated fastening structure, and the screw rod is driven by the locking cylinder 1 to smoothly rotate under the driving action of the driving structure, so as to be used for assembling a fastening positioning assembly.

In order to facilitate the first locking portion 11 and the second locking portion 12 to be smoothly deformed and approach to each other under the action of the external force of the locking bolt 3 and further increase the adhesion force with the outer peripheral surface of the screw rod 10, as shown in fig. 2, a radial locking hole 103 is formed in one side of the locking gap 101, which is far away from the end portion of the locking cylinder 1. Because when the first locking portion 11 and the second locking portion 12 deform, the deformation acting force required by the part of the locking gap 101, which is connected with the body of the locking cylinder 1, is larger, the part is set to be the radial locking hole 103 with a larger space, so that the first locking portion 11 and the second locking portion 12 can smoothly deform under the tensioning action of the locking bolt 3 to realize locking.

Specifically, as shown in fig. 2 to 3, the driving mechanism is driving holes 104 arranged at a circumferential interval at a middle position of the lock cylinder 1. The assembly of the fastening positioning component is realized by using an auxiliary tool (such as a driving rod) to penetrate through the driving holes 104 at different positions, applying an external force along the circumferential direction to drive the locking cylinder 1 to rotate, and driving the screw rod 10 to rotate.

In order to avoid the problem that the inner wall of the locking cylinder 1 and the outer peripheral surface of the screw rod 10 slide relatively to each other to scratch the outer peripheral surface of the screw rod 10, as shown in fig. 4-5, symmetrical insertion grooves 105 are formed in the first locking part 11 and the second locking part 12, and an arc-shaped anti-slip ring 2 is inserted into each insertion groove 105. Under the action of external force of deformation of the first locking part 11 and the second locking part 12, the arc-shaped anti-slip rings 2 on the inner walls of the first locking part and the second locking part are tightly pressed and tightly attached to the peripheral surfaces of two sides of the screw rod 10, so that the periphery of the screw rod is tightly attached and wrapped. The arc-shaped anti-slip ring 2 can avoid sliding abrasion to the outer peripheral surface of the lead screw 10, and can effectively increase contact friction, so that the locking cylinder 1 is fastened with the lead screw 10 more tightly.

In order to further increase the anti-slip function of the arc-shaped anti-slip ring 2, the width from the inner wall surface to the outer wall surface of the arc-shaped anti-slip ring 2 is gradually increased from the center position thereof toward both ends in the circumferential direction (shown in fig. 4). When the locking cylinder 1 rotates clockwise or counterclockwise, the outer peripheral surface of the screw 10 is tightly attached to the arc-shaped anti-slip ring 2, the inner wall of the arc-shaped anti-slip ring 2 is tightly attached to the outer peripheral surface of the screw 10 due to deformation pressure, and the deformation pressing force of the two circumferential ends (shown in a position a in fig. 5) of the arc-shaped anti-slip ring 2 is larger than the middle position of the inner wall due to the gradual change structure of the inner wall of the arc-shaped anti-slip ring 2, so that the screw 10 rotates reversely relative to the locking cylinder 1 in the rotation process of the locking cylinder 1, and the middle position part of the inner wall of the arc-shaped anti-slip ring 2 is pushed towards and accumulated at the axial end part (shown in a position a in the figure), so that the thickness of the middle position is further increased, and the tightly attached pressing force of the arc-shaped anti-slip ring 2 and the outer peripheral surface of the screw 10 is further increased, thereby limiting the problem that the locking cylinder 1 slides relative to the outer peripheral surface of the screw 10.

Because the first locking portion 11 and the second locking portion 12 are integrated with the body of the locking cylinder 1, when the first locking portion 11 and the second locking portion 12 are deformed and locked, an included angle is formed between the whole body of the first locking portion 11 and the whole body of the second locking portion 12 and the outer peripheral surface of the screw 10, so that the arc-shaped anti-slip ring 2 and the outer peripheral surface of the screw 10 form an included angle, the contact area between the arc-shaped anti-slip ring 2 and the outer peripheral surface of the screw 10 is reduced, and the locking force is reduced, therefore, in order to solve the problem, the axial thickness of the arc-shaped anti-slip ring 2 gradually decreases towards the outer end direction of the locking cylinder 1 (shown in fig. 6). When the first locking portion 11 and the second locking portion 12 are deformed and clamped, the arc-shaped anti-slip rings 2 on the inner walls of the first locking portion and the second locking portion synchronously rotate, so that the inclined plane structures of the inner walls gradually tend to be in a horizontal state (shown in fig. 7), the contact area between the inner walls and the outer peripheral surface of the screw rod 10 is increased, and the contact friction and the locking acting force are further increased.

The principle of the utility model is as follows: on emboliaing the tip outer peripheral face of lead screw 10 with a locking section of thick bamboo 1 one end, penetrate fastening screw perforation 102 with locking bolt 3, order about first locking portion 11 and second locking portion 12 homogeneous phase to take place deformation and be close to in opposite directions for a locking section of thick bamboo 1 body, and all hug closely on lead screw 1 outer end is global, make a locking section of thick bamboo 1 and lead screw 10 form integrative fastening structure, wear to establish in the drive hole 104 of different positions department through using appurtenance, exert external force drive locking section of thick bamboo 1 rotation along circumference to drive lead screw 10 and rotate, realize the assembly of fastening position subassembly.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a lead screw is locking frock for lock nut, lead screw (10) rotate to set up on support (30) at machine tool base (20) both ends, and lead screw (10) both ends are all stretched out support (30) outside, lead screw (10) stretch out the both ends of support (30) are all overlapped and are equipped with fastening position subassembly, its characterized in that: the locking tool is detachably fastened on the peripheral surface of the outer side of the fastening positioning component, where the lead screw (10) extends out, and the locking tool is provided with a driving mechanism for driving the lead screw (10) to rotate.

2. The locking tool for the lead screw locking nut according to claim 1, characterized in that: locking frock includes that detachable cover establishes locking section of thick bamboo (1) of lead screw (10) periphery tip will locking section of thick bamboo (1) both ends certain length scope all is cut apart into first locking portion (11) and second locking portion (12) of symmetry along the axial, it has locking clearance (101) to reserve between first locking portion (11) and second locking portion (12), and first locking portion (11) and second locking portion (12) radial direction correspond and have seted up fastening screw and perforate (102).

3. The locking tool for the lead screw locking nut as claimed in claim 2, wherein: one side of the locking clearance (101) far away from the end part of the locking cylinder (1) is provided with a radial locking hole (103) in a penetrating way.

4. The locking tool for the lead screw locking nut as claimed in claim 3, wherein: the driving mechanism is driving holes (104) arranged at the middle position of the locking cylinder (1) along the circumferential direction at intervals.

5. The locking tool for the lead screw locking nut as claimed in claim 4, wherein: symmetrical embedded grooves (105) are formed in the first locking portion (11) and the second locking portion (12), and arc-shaped anti-slip rings (2) are embedded into the embedded grooves (105).

6. The locking tool for the lead screw locking nut as claimed in claim 5, wherein: the width from the inner wall surface to the outer wall surface of the arc-shaped anti-skid ring (2) is gradually increased from the center position thereof towards the two ends in the circumferential direction, and the axial thickness of the arc-shaped anti-skid ring (2) is gradually decreased towards the outer end direction of the locking cylinder (1).