Tensioning clamp for finish turning of outer circle of thin-wall inner gear ring
By designing a tensioning fixture for precision machining of the outer diameter of thin-walled internal gear rings, and utilizing the elastic tensioning sleeve and the inner conical surface mating structure, the problems of high cost and long adjustment time of dedicated internal gear pitch circle fixtures are solved, thus realizing efficient coaxiality machining and low-cost production of thin-walled internal gear rings.
Patent Information
- Application Number
- CN202422187436.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-09-06
AI Technical Summary
Existing dedicated internal gear pitch circle jigs are expensive to purchase and take a long time to set up and adjust, making them difficult to meet the needs of multi-variety, small-batch production of thin-walled internal gear rings.
A tensioning fixture for precision machining the outer diameter of a thin-walled internal gear ring is designed, comprising a fixture body and an elastic tensioning sleeve. The fixture body's connecting part engages with the internal thread of the elastic tensioning sleeve, and the pushing part pushes the elastic clamping ring outward to achieve the coaxiality requirement of the thin-walled internal gear ring. The mating structure of the inner and outer conical surfaces is simple and facilitates adjustment of the tension.
It achieves the coaxiality requirement between the teeth and the outer circle of the thin-walled internal gear ring, reduces manufacturing costs, improves production efficiency and the convenience of clamping and adjustment, and is suitable for thin-walled internal gear rings of different sizes.
Smart Images
Figure CN223588355U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of thin-wall inner gear ring fine turning outer circle with tension clamp, belong to gear machining technical field. BACKGROUND
[0002] Thin-wall inner gear ring is very widely used in space engineering product;In order to guarantee the coaxial degree requirement of the gear tooth of thin-wall inner gear ring and its outer circle, after the gear tooth of thin-wall inner gear ring is processed, it needs to be fine turned outer circle to size with gear tooth as reference;Existing technology generally adopts special inner tooth pitch circle clamp to fine turn outer circle with gear tooth pitch circle as reference;And special inner tooth pitch circle clamp needs to provide gear parameter to be designed and produced by professional manufacturer, there is high purchase cost, clamping adjustment time is long, production efficiency is low and the like, it is difficult to adapt to the needs of thin-wall inner gear ring product multi-species small batch production. SUMMARY
[0003] In order to solve the above technical problem, the utility model provides a kind of thin-wall inner gear ring fine turning outer circle with tension clamp, solves the problem of clamping adjustment time is long, production efficiency is low.
[0004] The utility model provides a kind of thin-wall inner gear ring fine turning outer circle with tension clamp, including fixture body and elastic tensioning sleeve, the elastic tensioning sleeve includes fixed part and the elastic clamping ring being set on fixed part, the fixed part is equipped with internal thread, the elastic clamping ring outer wall is equipped with positioning gear, the fixture body includes connecting portion and the push pressure part being set in the tail end of connecting portion, the connecting portion is equipped with external thread, the connecting portion is threadedly connected with fixed part, the push pressure part is in abutment with elastic clamping ring and promotes elastic clamping ring to expand outward, to drive positioning gear to expand outward and tension thin-wall inner gear ring.
[0005] The utility model has the advantages that, by the cooperation of the external thread of the connecting portion of fixture body and the internal thread of elastic tensioning sleeve, the connecting portion drives push pressure part to gradually close to fixed part, at this time, elastic clamping ring gradually expands outward due to the gradually closing of push pressure part, and positioning gear on the outer wall of elastic clamping ring also expands outward and tensions thin-wall inner gear ring;By the clamping of elastic tensioning, not only guarantee the coaxial degree requirement of the gear tooth of thin-wall inner gear ring and its outer circle, but also have the advantages such as low manufacturing cost, convenient use and adjustment.
[0006] Further, the inner wall of the elastic clamping ring is equipped with inner taper face, the outer wall of the push pressure part is equipped with outer taper face, and the inner taper face is in abutment with the outer taper face.
[0007] The cooperation of the inner taper face and the outer taper face is simple in structure, convenient for workers to operate, easy to realize the tensioning function, convenient for adjusting the tensioning degree, and suitable for thin-wall inner gear rings of different sizes.
[0008] Further, at least two elastic contraction grooves are arranged between the elastic clamping ring and the positioning gear, and the elastic contraction grooves are distributed along the circumferential direction of the elastic clamping ring.
[0009] By adopting the above technical scheme, the three elastic contraction grooves can divide the entire elastic clamping ring into two parts, so that the elastic clamping ring is more elastic and easy to deform, and can expand outward following the pushing of the pushing part.
[0010] Further, the elastic contraction grooves penetrate the inner wall and the outer wall of the elastic clamping ring.
[0011] By adopting the above technical scheme, the elastic contraction grooves penetrating the inner wall and the outer wall of the elastic clamping ring can make the two parts of the elastic clamping ring independent of each other, thereby increasing the elastic deformation capacity of the elastic clamping ring.
[0012] Further, an elastic avoiding groove is arranged at the connection between the elastic clamping ring and the fixed part.
[0013] By adopting the above technical scheme, the elastic avoiding groove provides a deformation space for the elastic deformation of the elastic clamping ring, thereby preventing the elastic clamping ring from interfering with the connection between the fixed part when expanding outward, and affecting the deformation.
[0014] Further, a clamping groove is arranged at the tail end of the pushing part, and the clamping groove is a hexagonal clamping groove.
[0015] By adopting the above technical scheme, the hexagonal clamping groove allows workers to rotate the pushing part and the connecting part through a hexagonal wrench, change the position, and adjust the expansion degree of the elastic clamping ring. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a schematic view of the cooperation structure of the elastic expansion sleeve and the clamp body;
[0017] Figure 2 is a schematic view of the structure of the elastic expansion sleeve;
[0018] Figure 3 is Figure 2 the right view;
[0019] Figure 4 is a schematic view of the structure of the clamp body;
[0020] Figure 5 is the left view of the clamp body;
[0021] In the figure: 1 elastic expansion sleeve, 11 fixed part, 111 inner thread, 112 elastic avoiding groove, 12 elastic clamping ring, 121 positioning gear, 122 inner tapered surface, 123 elastic contraction groove, 2 clamp body, 21 connecting part, 211 outer thread, 22 pushing part, 221 outer tapered surface, 222 hexagonal clamping groove. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.
[0023] The terms "first", "second" and the like (if any) in the description and claims of the utility model are used to distinguish similar objects, rather than to describe a specific order or sequence, even if "second" is used before a certain technical feature to distinguish, it does not mean that it must have "first". It should be understood that in the utility model, "include" and "have" and any variation thereof are intended to cover non-exclusive inclusion. It should be understood that in the utility model, "multiple" means two or more than two. And / or is only a description of the relationship between the associated objects, which means that there may be three kinds of relationships, for example, the thin wall inner gear ring outer circle finishing tension clamp and / or Y can mean that there are three situations: only the thin wall inner gear ring outer circle finishing tension clamp exists, the thin wall inner gear ring outer circle finishing tension clamp and Y exist at the same time, and only Y exists. The character " / " generally represents that the front and rear associated objects are in an "or" relationship. "Including thin wall inner gear ring outer circle finishing tension clamp, Y and Z", "including thin wall inner gear ring outer circle finishing tension clamp, Y, Z" means that thin wall inner gear ring outer circle finishing tension clamp, Y and Z are all included. "Including thin wall inner gear ring outer circle finishing tension clamp, Y or Z" means that one of thin wall inner gear ring outer circle finishing tension clamp, Y and Z is included. "Including thin wall inner gear ring outer circle finishing tension clamp, Y and / or Z" means that any one or any two or all of thin wall inner gear ring outer circle finishing tension clamp, Y and Z are included.
[0024] As Figures 1 to 5 The utility model provides a kind of thin wall inner gear ring outer circle finishing tension clamp, including fixture body 2 and elastic tensioning sleeve 1,elastic tensioning sleeve 1 includes fixed part 11 and the elastic clamping ring 12 being set on fixed part 11, fixed part 11 is equipped with internal thread 111, elastic clamping ring 12 outer wall is equipped with positioning gear 121, fixture body 2 includes connecting portion 21 and the push pressure portion 22 being set at the tail end of connecting portion 21, connecting portion 21 is equipped with outer thread 211, connecting portion 21 is connected with fixed part 11 by screw thread, push pressure portion 22 is in abutment with elastic clamping ring 12 and promotes elastic clamping ring 12 to expand outward, to drive positioning gear 121 to expand outward and tighten thin wall inner gear ring.
[0025] The utility model discloses a fixture body 2's connecting portion 21's outer thread 211 and the cooperation of elastic tensioning sleeve 1's inner thread 111, and connecting portion 21 drives push portion 22 can gradually close to fixed portion 11 direction, at this moment, elastic clamp ring 12 gradually expands outward because of the gradually close of push portion 22, and the positioning gear 121 on the outer wall of elastic clamp ring 12 also expands outward and tightens the thin wall inner gear ring simultaneously, the workpiece is clamped through the elastic tensioning mode, not only guarantee the coaxial degree requirement of the gear of thin wall inner gear ring and its outer circle, but also have the advantages such as low manufacturing cost, convenient use adjustment.
[0026] Specifically, the inner wall of the elastic clamp ring 12 is provided with an inner taper surface 122 inclined from the opening direction to the fixed portion 11 direction, and the outer wall of the push portion 22 is provided with a matching outer taper surface 221 corresponding to the inner taper surface 122. When the fixed portion 11 is threadedly connected with the connecting portion 21, the inner taper surface 122 and the outer taper surface 221 abut against each other. The matching structure of the inner taper surface 122 and the outer taper surface 221 is simple, convenient for workers to operate, easy to realize the tensioning function, convenient to adjust the tensioning degree, and suitable for thin wall inner gear rings of different size differences.
[0027] In the embodiment, three elastic contraction grooves 123 are arranged between the elastic clamp ring 12 and the positioning gear 121, and the elastic contraction grooves 123 are distributed along the circumferential direction of the elastic clamp ring 12. The three elastic contraction grooves 123 can divide the entire elastic clamp ring 12 into three parts, so that the elastic clamp ring 12 has more elasticity and is easy to deform and expand outward following the push of the push portion 22.
[0028] The elastic contraction grooves 123 penetrate the inner wall and the outer wall of the elastic clamp ring 12, so that the three parts of the elastic clamp ring 12 are independent of each other, and the elastic deformation capacity of the elastic clamp ring 12 is increased.
[0029] Of course, in other embodiments, the number of elastic contraction grooves 123 can be two, four, five, etc.
[0030] In the embodiment, the elastic clamp ring 12 is connected with the fixed portion 11, and the upper and lower ends of the elastic clamp ring 12 are provided with elastic avoiding grooves 112. The elastic avoiding grooves 112 provide a deformation space for the elastic deformation of the elastic clamp ring 12, prevent interference between the elastic clamp ring 12 and the connection part of the fixed portion 11 when the elastic clamp ring 12 expands outward, and affect the deformation of the elastic clamp ring 12.
[0031] Specifically, the tail end of the push portion 22 is provided with a hexagonal clamping groove 222, which is matched with the shape of a hexagonal wrench. The hexagonal clamping groove 222 allows workers to rotate the push portion 22 and the connecting portion 21 through a hexagonal wrench, change the position of the push portion 22 and the connecting portion 21, and adjust the expansion degree of the elastic clamp ring 12.
[0032] In addition to the preferred embodiments described above, the utility model also has other implementation manners, based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of the utility model claimed.
Claims
1. A tensioning fixture for finish turning the outer circle of a thin-walled ring gear, characterized in that: The clamp body and the elastic expansion sleeve, the elastic expansion sleeve comprises a fixed part and an elastic clamping ring arranged on the fixed part, the fixed part is provided with an internal thread, the outer wall of the elastic clamping ring is provided with a positioning gear, the clamp body comprises a connecting part and a pushing part arranged at the tail end of the connecting part, the connecting part is provided with an external thread, the connecting part is threadedly connected with the fixed part, the pushing part abuts against the elastic clamping ring and pushes the elastic clamping ring to expand outward to drive the positioning gear to expand outward and tighten the thin-walled inner gear ring.
2. The tensioning fixture for finish turning the outer circle of a thin-walled ring gear with internal teeth according to claim 1, characterized in that: The inner wall of the elastic clamping ring is provided with an inner taper surface, the outer wall of the pushing part is provided with an outer taper surface, and the inner taper surface abuts against the outer taper surface.
3. The tensioning fixture for finish turning the outer circle of the thin-walled ring gear with internal teeth according to claim 1, characterized in that: At least two elastic contraction grooves are arranged between the elastic clamping ring and the positioning gear, and the elastic contraction grooves are distributed along the circumferential direction of the elastic clamping ring.
4. The thin-wall ring fine turning outer circle tensioning clamp according to claim 3, characterized in that: The elastic contraction grooves penetrate the inner wall and the outer wall of the elastic clamping ring.
5. The thin-wall ring fine turning outer circle tensioning clamp according to claim 1, characterized in that: An elastic avoiding groove is arranged at the connection between the elastic clamping ring and the fixed part.
6. The thin-wall ring fine turning outer circle tensioning clamp according to claim 1, characterized in that: The tail end of the pushing part is provided with a clamping groove, and the clamping groove is a hexagonal clamping groove.