阅读说明：本技术 一种细径小尺寸链环手工弯曲工装及成形方法 (Manual bending tool and forming method for small-diameter and small-size chain ring ) 是由 刘礼军 仇一卿 燕翔 张建华 刘巨锋 李春光 周宏图 谢智 于 2019-10-29 设计创作，主要内容包括：本发明属于金属件加工技术领域,公开了一种细径小尺寸链环手工弯曲工装,包括：芯棒以及手柄；所述芯棒的径向截面呈椭圆形,所述芯棒的侧壁上,沿所述芯棒的轴向开设有凹槽,所述凹槽内开设有径向贯穿所述芯棒的第一通孔；所述手柄固定在所述芯棒上。本发明提供一种细径小尺寸链环手工弯曲工装,能够高效高质量的实现细径小尺寸链环的手工弯曲加工。(The invention belongs to the technical field of metal part processing, and discloses a manual bending tool for a small-diameter and small-size chain ring, which comprises: a mandrel and a handle; the radial section of the core rod is elliptic, a groove is formed in the side wall of the core rod along the axial direction of the core rod, and a first through hole penetrating through the core rod in the radial direction is formed in the groove; the handle is fixed on the core rod. The invention provides a manual bending tool for small-diameter and small-size chain rings, which can realize manual bending processing of the small-diameter and small-size chain rings efficiently and in high quality.)

1. The utility model provides a manual crooked frock of small-size chain ring of thin footpath which characterized in that includes: a mandrel and a handle;

the radial section of the core rod is elliptic, a groove is formed in the side wall of the core rod along the axial direction of the core rod, and a first through hole penetrating through the core rod in the radial direction is formed in the groove;

the handle is fixed on the core rod.

2. The small-diameter small-size chain ring manual bending tool according to claim 1, wherein the handle comprises: a connecting rod, a rocker and a sleeve;

the first end of the connecting rod is fixed on the mandrel, the second end of the connecting rod is fixedly connected with the first end of the rocker, and the axial direction of the rocker is parallel to the axial direction of the mandrel;

the sleeve is rotatably sleeved outside the rocker.

3. The manual bending tool for the small-diameter and small-size chain ring as claimed in claim 2, wherein: and a locking piece is fixed at the second end of the rocker to limit the axial separation of the sleeve.

4. The manual bending tool for the small-diameter and small-size chain ring as claimed in claim 3, wherein: the locking piece is a locking bolt, and the locking bolt is detachably fixed to the second end of the rocker.

5. The manual bending tool for the small-diameter and small-size chain ring as claimed in claim 3, wherein: the retaining member is a radial flange.

6. The small-diameter small-size chain ring manual bending tool according to claim 2, wherein the handle further comprises: a first bearing;

the inner ring of the first bearing is sleeved on the outer wall of the rocker, and the outer ring of the first bearing is fixed on the inner wall of the sleeve.

7. The manual bending tool for small-diameter and small-size chain rings according to claim 1, further comprising: a support;

the support is provided with a bearing seat, and the end part of the core rod is rotationally fixed on the bearing seat through a second bearing.

8. The manual bending tooling for small-diameter and small-size chain rings according to claim 7, wherein the bracket further comprises: the first wire bundling pulley, the first universal wheel seat, the second wire bundling pulley and the second universal wheel seat;

the first bunching pulley is rotationally fixed on the first bunching pulley seat, the second bunching pulley is rotationally fixed on the second bunching pulley seat, and the wire groove of the first bunching pulley is buckled with the wire groove of the second bunching pulley together.

9. The manual bending tool for the small-diameter and small-size chain ring according to any one of claims 1 to 8, further comprising: a bench vice;

the bench vice is arranged on one side of the core rod and used for clamping the end part of the steel wire to be bent.

10. A method for manually bending a small-diameter and small-size chain ring, which is characterized by adopting the tool of claim 1 and performing the following steps:

embedding a first end of a steel wire to be bent into the first through hole, then rotating the core rod, winding the steel wire on the core rod, and enabling adjacent steel wire rope rings to abut against each other;

and cutting the steel wire rope ring along the groove to obtain the chain ring with the notch.

Technical Field

The invention relates to the technical field of metal part processing, in particular to a manual bending tool and a forming method for a small-diameter and small-size chain ring.

Background

The small-diameter chain link products are usually produced by manual bending when the required number is small. However, when the manual bending mode is adopted for processing, the problems that the appearance of the part is small, the manual high-precision bending difficulty is high and the efficiency is low are faced.

Disclosure of Invention

The invention provides a manual bending tool and a forming method for small-diameter and small-size chain rings, and solves the technical problems of high difficulty and low efficiency in manual high-precision processing of the small-diameter and small-size chain rings in the prior art.

In order to solve the technical problem, the invention provides a manual bending tool for a small-diameter and small-size chain ring, which comprises: a mandrel and a handle;

the radial section of the core rod is elliptic, a groove is formed in the side wall of the core rod along the axial direction of the core rod, and a first through hole penetrating through the core rod in the radial direction is formed in the groove;

the handle is fixed on the core rod.

Further, the handle includes: a connecting rod, a rocker and a sleeve;

the first end of the connecting rod is fixed on the mandrel, the second end of the connecting rod is fixedly connected with the first end of the rocker, and the axial direction of the rocker is parallel to the axial direction of the mandrel;

the sleeve is rotatably sleeved outside the rocker.

Furthermore, a locking piece is fixed at the second end of the rocker and used for limiting the sleeve to be axially separated.

Furthermore, the locking piece is a locking bolt, and the locking bolt is detachably fixed on the second end of the rocker.

Further, the retaining member is a radial flange.

Further, the handle further comprises: a first bearing;

the inner ring of the first bearing is sleeved on the outer wall of the rocker, and the outer ring of the first bearing is fixed on the inner wall of the sleeve.

Further, the frock still includes: a support;

the support is provided with a bearing seat, and the end part of the core rod is rotationally fixed on the bearing seat through a second bearing.

Further, the bracket further comprises: the first wire bundling pulley, the first universal wheel seat, the second wire bundling pulley and the second universal wheel seat;

the first bunching pulley is rotationally fixed on the first bunching pulley seat, the second bunching pulley is rotationally fixed on the second bunching pulley seat, and the wire groove of the first bunching pulley is buckled with the wire groove of the second bunching pulley together.

Further, the frock still includes: a bench vice;

the bench vice is arranged on one side of the core rod and used for clamping the end part of the steel wire to be bent.

A manual bending method for a small-diameter and small-size chain ring adopts the tool and executes the following steps:

embedding a first end of a steel wire to be bent into the first through hole, then rotating the core rod, winding the steel wire on the core rod, and enabling adjacent steel wire rope rings to abut against each other;

and cutting the steel wire rope ring along the groove to obtain the chain ring with the notch.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

according to the manual bending tool and the forming method for the small-diameter and small-size chain ring, a stable bending die is formed through the oval core rod, so that the west-diameter steel wire is wound on the core rod through rotating the core rod to form the high-quality oval rope ring, the accuracy and the quality of the specification and the form of the chain ring are guaranteed, and then the steel wire is cut off along the groove through the cutting tool, so that a plurality of independent chain rings are obtained; it is worth explaining that the end parts of the steel wires are fixed by arranging the through holes in the grooves, so that the mandrel can be simply rotated to realize winding and bending, and the whole process is simple and efficient; thereby because according to the crooked and cutting of plug under the condition of the quality and the precision of guaranteeing crooked form and specification, can reduce the bending degree of difficulty by a wide margin, promote bending efficiency.

Drawings

FIG. 1 is a schematic structural view of a manual bending tool for small-diameter and small-size chain links according to an embodiment of the present invention;

FIG. 2 is a front view of a manual bending tooling for small-diameter and small-size chain rings, provided by an embodiment of the invention;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a top view of FIG. 1;

FIG. 5 is a structural diagram of an upper-loading winding state of the manual bending tooling for the small-diameter and small-size chain rings, provided by the embodiment of the invention;

FIG. 6 is a front view of FIG. 5;

FIG. 7 is a schematic view of an upper-mounted cutting state of the manual bending tooling for small-diameter and small-size chain rings, according to an embodiment of the invention;

fig. 8 is a schematic structural diagram of an auxiliary clamping member according to an embodiment of the present invention.

Detailed Description

The embodiment of the application provides the manual bending tool and the forming method for the small-diameter and small-size chain ring, and solves the technical problems that in the prior art, the manual high-precision machining of the small-diameter and small-size chain ring is high in difficulty and low in efficiency.

In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and examples of the present application may be combined with each other without conflict.

Referring to fig. 1, a manual bending tool for small-diameter and small-size chain rings comprises: a core rod 1 and a handle; the handle is fixed on the core rod 1, and when the bending operation is performed, the handle is held to drive the core rod 1 to rotate, so that a steel wire to be bent is wound on the core rod 1, the steel wire is bent, and the simple and convenient bending operation is realized.

It is worth to say that the radial section of the mandrel bar 1 is elliptical, so as to form a high-quality chain ring in an elliptical shape when bending, and to maintain the specification of the chain ring; therefore, the bending machine can be compatible with high quality, high precision specification, simplicity and convenience, and high-efficiency manual bending operation.

Referring to fig. 2, 3 and 4, a groove 2 is formed in the sidewall of the mandrel 1 along the axial direction of the mandrel 1, and is used for cutting the steel wire rope wound on the mandrel 1 to form a plurality of separate links with gaps, so as to complete bending of the links; and then the independent chain rings are mutually hooked, and then the opening is welded to obtain the chain.

It is worth to be noted that, in order to improve the winding quality of the steel wire, a first through hole 7 which radially penetrates through the core rod 1 is formed in the groove 2; the mandrel is used for fixing the head end of the steel wire rope, then the mandrel 1 is rotated, so that stable winding operation is realized, more importantly, the stability of the steel wire rope winding can be ensured, the sliding is avoided, and the precision and the quality of the form specification of each chain ring are ensured.

Of course, it should be noted that a second through hole 8 may be further disposed on the groove 2, and the end of the steel wire rope which is wound is inserted into the second through hole 8, so as to fix the wound rope loop on the mandrel bar 1, thereby ensuring a stable form during cutting and ensuring cutting quality and efficiency.

As will be further described below.

The handle includes: a connecting rod 3, a rocker 4 and a sleeve 5; the first end of the connecting rod 3 is fixed on the core rod 1, the second end of the connecting rod 3 is fixedly connected with the first end of the rocker 4, the axial direction of the rocker 4 is parallel to the axial direction of the core rod 1, and the sleeve is rotatably sleeved outside the rocker; thereby the arm of force can be prolonged, and labor-saving and efficient winding operation can be realized.

To limit the axial displacement of the sleeve 5, a locking member 6 is fixed to the second end of the rocker 4.

Further, the locking member 6 is a locking bolt detachably fixed to the second end of the rocking bar 4.

Of course, the locking member 6 may also be a radial flange.

In order to further improve the rotating quality of the sleeve, the handle further comprises: a first bearing; the inner ring of the first bearing is sleeved on the outer wall of the rocker 4, and the outer ring of the first bearing is fixed on the inner wall of the sleeve 5, so that the rotating smoothness is improved.

Generally, the first bearings can be arranged in two or more, so as to realize a plurality of movable supporting points, ensure the stable spacing between the sleeve 5 and the rocker 4 and ensure the stable rotation posture.

In order to guarantee the stability of winding, even interval between the chain link, the stability of chain link specification is unified, the frock still includes: a support; the support is provided with a bearing seat, and the end part of the core rod 1 is rotationally fixed on the bearing seat through a second bearing. Thereby ensuring that the core rod 1 can stably rotate on the same axis, ensuring the winding quality and the specification and the form of each chain ring.

Generally, the number of the second bearings is two, and the second bearings are fixed corresponding to two ends of the mandrel 1, so as to ensure the stability of the mandrel 1.

Further, the bracket further comprises: the first wire bundling pulley, the first universal wheel seat, the second wire bundling pulley and the second universal wheel seat; first bunch pulley rotationally fixes on the first bull wheel seat, second bunch pulley rotationally fixes on the second bull wheel seat, just the wire casing of first bunch pulley with the wire casing lock of second bunch pulley is in the same place to when using, wire rope can restrict first bunch pulley's wire casing with between the wire casing of second bunch pulley, pull wire rope, guarantee winding quality.

It is worth noting that the universal wheel seat can change along with the change of the winding position, so that the steel wire rope can be wound more smoothly.

Referring to fig. 5, 6 and 7, the tool further includes: a bench vice 11; the bench vice 11 is arranged on one side of the core rod 1 and is used for clamping the end part 14 of the steel wire 12 to be bent; corresponding to the fixation of the first end 13 of the steel cord through the first through hole 2.

In order to ensure the reliability of clamping, an auxiliary clamping piece 9 is arranged between the bench vice 11, so that the abrasion can be reduced while high clamping force is ensured.

Referring to fig. 8, the inclined surface 10 is formed on the clamping side of the auxiliary clamping member 9 to facilitate clamping, and simultaneously, the mandrel 1 can be clamped after the overwinding is completed.

The application also provides a manual bending method of the small-diameter and small-size chain ring, which adopts the tool and executes the following steps:

embedding a first end 13 of a steel wire to be bent into the first through hole 7, then rotating the core rod 1, winding the steel wire 12 on the core rod 1, and enabling adjacent steel wire rope rings to abut against each other;

and cutting the steel wire rope ring along the groove 2 to obtain the chain ring with the notch.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

according to the manual bending tool and the forming method for the small-diameter and small-size chain ring, a stable bending die is formed through the oval core rod, so that the west-diameter steel wire is wound on the core rod through rotating the core rod to form the high-quality oval rope ring, the accuracy and the quality of the specification and the form of the chain ring are guaranteed, and then the steel wire is cut off along the groove through the cutting tool, so that a plurality of independent chain rings are obtained; it is worth explaining that the end parts of the steel wires are fixed by arranging the through holes in the grooves, so that the mandrel can be simply rotated to realize winding and bending, and the whole process is simple and efficient; thereby because according to the crooked and cutting of plug under the condition of the quality and the precision of guaranteeing crooked form and specification, can reduce the bending degree of difficulty by a wide margin, promote bending efficiency.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.