Skewering rod
By introducing a bearing housing and multiple bearings into the string rod, the rotation of the string rod shaft is achieved, which solves the vibration and friction loss problems caused by the mismatch between the needle and the terminal groove in traditional string rods, and improves the precision and uniformity of machining.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN GUANLIN PHOTOELECTRIC TECH CO LTD
- Filing Date
- 2025-01-10
- Publication Date
- 2026-04-10
AI Technical Summary
In traditional bar machining, the mismatch between the needle tip and the terminal groove leads to vibration and friction loss, affecting machining accuracy.
A bearing housing structure is introduced into the tandem bar, with multiple bearings installed to support and allow the tandem bar shaft to rotate, reducing friction and vibration.
The rotatable needle structure reduces vibration and friction loss during machining, improving machining accuracy and uniformity.
Smart Images
Figure CN224102338U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of machining, specifically relates to a string bar with rotatable needle head. BACKGROUND
[0002] When the string bar on the traditional equipment is pressed against the workpiece by the superhard terminal of the fixture to carry out machining or blank repair, the superhard generally has a V-shaped groove or a U-shaped groove, the needle head of the string bar is a pointed needle head or a circular needle head, the rotation fulcrum is at the contact position of the terminal groove and the needle head, and due to the effect of the pressure and the insufficient matching of the needle head and the terminal groove, the rotation of the fixture is affected, and the string bar is not smooth or the groove is deepened after a certain period of time, thereby interfering with the needle head and affecting the precision of the machined workpiece. SUMMARY
[0003] In order to solve the above problems, the utility model aims at providing a string bar applied to the field of machining, which comprises a string bar main shaft, a bearing bin and a string bar rotating shaft which are sequentially arranged from top to bottom, a plurality of bearings are arranged in the bearing bin in the vertical direction, the bearings can support the string bar rotating shaft on one hand, and can enable the string bar rotating shaft to rotate on the string bar on the other hand, thereby reducing the vibration and friction loss of the needle head in the machining process.
[0004] The utility model is realized through the following technical solutions:
[0005] The string bar main shaft, the bearing bin and the string bar rotating shaft are sequentially arranged from top to bottom, a plurality of bearings are arranged in the bearing bin in the vertical direction, and the string bar rotating shaft rotates in the bearing.
[0006] In an optional embodiment, the string bar main shaft, the bearing bin and the string bar rotating shaft are sequentially connected on a common central axis.
[0007] In an embodiment, the bearing bin is a hollow cylindrical structure with a bottom surface, and the top surface of the bearing bin is tightly connected with the string bar main shaft.
[0008] In an optional embodiment, the bearing bin sequentially comprises a first bearing, a second bearing and a third bearing from top to bottom, the first bearing, the second bearing and the third bearing have the same inner diameter and outer diameter, and the outer diameter of the bearings is consistent with the inner wall caliber of the bearing bin.
[0009] In an embodiment, the first bearing, the second bearing and the third bearing are all composed of an inner ring, an outer ring and a plurality of balls between the inner ring and the outer ring, the outer ring can be fixed on the inner wall of the bearing bin, and the inner ring can rotate on the string bar central axis by relying on the balls.
[0010] In an alternative embodiment, a lubricating agent can be filled between the outer ring and the inner ring of the bearing, so as to reduce the rotating friction loss of the bearing.
[0011] In an alternative embodiment, the rotating shaft of the string rod comprises, from top to bottom, a rotating shaft upper end, a rotating shaft lower end and a needle, the rotating shaft upper end is in the shape of an inverted T, so that the rotating shaft upper end can be inserted into the inner hole of the first bearing, the second bearing and the third bearing, and abut against the third bearing.
[0012] In an alternative embodiment, the rotating shaft upper end of the string rod rotating shaft can be fixedly connected to the inner ring of the bearing, and can rotate with the bearing, so as to reduce the friction loss.
[0013] The rotating shaft lower end is fixedly connected to the rotating shaft upper end, and the rotating shaft lower end can be integrally formed with the rotating shaft upper end, or can be fixed to the rotating shaft upper end in a detachable manner.
[0014] In an embodiment, the needle is fixedly connected to the rotating shaft lower end, and can be fixed in a detachable manner.
[0015] In an alternative embodiment, the needle has a V-shaped head or a circular head at the end away from the rotating shaft lower end, so as to be suitable for different processing scenarios, the V-shaped head can be used when processing a V-shaped groove superhard terminal, and the circular head can be used when processing a U-shaped groove superhard terminal.
[0016] Specifically, the needle can be made of metal, diamond, silicon carbide or other hard structures.
[0017] The string rod provided in the embodiment comprises, from top to bottom, a string rod main shaft, a bearing compartment and a string rod rotating shaft, the bearing compartment is provided with a plurality of bearings in the vertical direction, and the end of the string rod rotating shaft is provided with a needle for mechanical processing, the needle is in a rotatable structure, so that the vibration and friction of the superhard terminal can be offset by the rotating needle during the mechanical processing, and the device loss is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0019] Figure 1 is a schematic diagram of a string rod structure provided in the embodiment of the present application.
[0020] 1, string rod main shaft; 10, fixed hole; 2, bearing compartment; 20, bearing; 3, string rod rotating shaft; 30, rotating shaft upper end; 31, rotating shaft lower end; 32, needle. DETAILED DESCRIPTION
[0021] The utility model will be further described below in combination with examples and drawings, but not as the limitation of the scope of protection of the present application. It should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model.
[0022] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two; The orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", "vertical", "horizontal", "top", "bottom", "inner", "outer" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The indicated device or element must have a particular orientation, a particular orientation and operation, so it cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0023] Please refer to Figure 1 The utility model embodiment provides a kind of string rod, by increasing bearing compartment structure in traditional string rod, when string rod is machined, needle part can be rotated under the action of the bearing set, can reduce the vibration loss and friction loss caused by mismatching of superhard terminal and needle, guarantee the uniformity and precision of machining.
[0024] The embodiment provides a kind of string rod, including by upper to lower sequentially consisting of string rod main shaft 1, bearing compartment 2 and string rod rotating shaft 3, multiple bearings are provided in the bearing compartment 2 in vertical direction, the bearing can support string rod rotating shaft 3 on one hand, on the other hand, string rod rotating shaft 3 can be rotated on string rod, reduce the vibration and friction loss of needle in machining process.
[0025] In an alternative embodiment, the string rod main shaft 1, bearing compartment 2 and string rod rotating shaft 3 are sequentially connected on a common central axis.
[0026] In an alternative embodiment, the string rod main shaft 1 is a columnar structure, and a fixed hole 10 is provided at the axial position of the string rod main shaft 1 for fixing the string rod on a machining platform for machining work.
[0027] In one embodiment, the bearing compartment 2 is a hollow cylindrical structure with a bottom surface, and the top surface is tightly connected with the string rod main shaft 1.
[0028] In an alternative embodiment, the bearing compartment 2 comprises a first bearing, a second bearing and a third bearing from top to bottom, and the first bearing, the second bearing and the third bearing have the same inner diameter and outer diameter, and the outer diameter is consistent with the inner wall caliber of the bearing compartment 2, so as to prevent the bearing from falling off.
[0029] In one embodiment, the first bearing, the second bearing and the third bearing are composed of an inner ring, an outer ring and a ball bearing therebetween, and the outer ring can be fixed on the inner wall of the bearing compartment 2, and the inner ring can rotate on the string rod center axis by relying on the ball bearing.
[0030] In an alternative embodiment, a lubricating agent can be filled between the outer ring and the inner ring of the bearing, so as to reduce the rotational friction loss of the bearing.
[0031] In an alternative embodiment, the string rod rotating shaft 3 comprises a rotating shaft upper end 30, a rotating shaft lower end 31 and a needle 32 from top to bottom, and the rotating shaft upper end 30 is in the shape of an inverted T structure, so that the rotating shaft upper end 30 can be inserted into the inner hole of the first bearing, the second bearing and the third bearing, and abut against the third bearing.
[0032] In an alternative embodiment, the rotating shaft upper end 30 of the string rod rotating shaft 3 can be fixedly connected with the inner ring of the bearing, and can rotate with the bearing, so as to reduce the friction loss.
[0033] The rotating shaft lower end 31 is fixedly connected with the rotating shaft upper end 30, and the rotating shaft lower end 31 can be integrally formed with the rotating shaft upper end 30, or can be fixedly connected with the rotating shaft upper end 30 in a detachable manner.
[0034] In one embodiment, the needle 32 is fixedly connected with the rotating shaft lower end 31, and can be fixed in a detachable manner.
[0035] In an alternative embodiment, the needle 32 is in the shape of a V-shaped head or a circular head at the end away from the rotating shaft lower end 31, so as to be suitable for different processing scenes, and the V-shaped head needle 32 can be used when processing a V-shaped groove superhard terminal, and the circular head needle 32 can be used when processing a U-shaped groove superhard terminal.
[0036] Specifically, the needle 32 can be composed of a metal, a diamond, a silicon carbide or the like.
[0037] The string rod provided by the embodiment comprises a string rod main shaft 1, a bearing bin 2 and a string rod rotating shaft 3 which are sequentially arranged from top to bottom, a plurality of bearings are arranged in the bearing bin 2 in the vertical direction, and a needle 32 for machining is arranged at the end of the string rod rotating shaft 3. The needle 32 is arranged in a rotatable structure, so that the vibration and friction fed back by the superhard terminal can be offset by the rotating needle during the machining process, thereby reducing the device loss.
[0038] It should be noted that the above embodiments are only preferred embodiments of the present application, and for those skilled in the art, various changes, modifications, replacements and deformations can be made to the embodiments without departing from the principles of the present application. The technical solutions obtained by equivalent replacement of the present application are all within the protection scope of the present application, and the protection scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A string bar, characterized in that, The string rod main shaft, the bearing bin and the string rod rotating shaft are sequentially connected on a common central axis. The string rod rotating shaft sequentially comprises a rotating shaft upper end, a rotating shaft lower end and a needle from top to bottom.
2. A string bar according to claim 1, wherein The string rod main shaft, the bearing bin and the string rod rotating shaft are sequentially connected on a common central axis.
3. A string bar according to claim 1, wherein The bearing bin is a hollow cylindrical structure with a bottom surface penetrating, and a top surface closely connected with the string rod main shaft.
4. A string bar according to claim 1, wherein The bearing bin sequentially comprises a first bearing, a second bearing and a third bearing from top to bottom.
5. A string bar according to claim 4, wherein The first bearing, the second bearing and the third bearing have the same inner diameter and outer diameter, and the outer diameter is consistent with the inner wall caliber of the bearing bin.
6. A string bar according to claim 4, wherein The first bearing, the second bearing and the third bearing are all composed of an inner ring, an outer ring and balls therebetween.
7. A string bar according to claim 4, wherein The outer ring can be fixed on the inner wall of the bearing bin, and the inner ring rotates on the string rod central axis by relying on the balls.
8. A string bar according to claim 4, wherein Lubricating agents are filled between the outer ring and the inner ring of the bearing.
9. A string bar according to claim 4, wherein The rotating shaft upper end of the string rod rotating shaft is fixedly connected on the inner ring of the bearing. The rotating shaft lower end and the rotating shaft upper end are an integrated structure, or are fixed on the rotating shaft upper end in a detachable manner. The needle is connected on the rotating shaft lower end in a detachable manner. An end of the needle away from the rotating shaft lower end is a V-shaped head or a circular head.