Shaking table torsion detection tool

Abstract

The utility model provides a kind of torsion detection tool of cradle, including sleeve that is sleeved to cradle lead screw axle end, and the inner ring of sleeve is equipped with the accommodation cavity that accommodates pre-tightening nut on cradle lead screw;The loading end of sleeve is equipped with the holding part that holds on the belt pulley of cradle lead screw;It further includes driving sleeve rotation, and the torsion tool that provides predetermined pre-tightening force to belt pulley.In the detection pre-tightening force, sleeve is loaded into cradle lead screw axle end, and pre-tightening nut portion is accommodated by the sleeve accommodation cavity of tool, and the holding part of sleeve loading end is held to belt pulley, and torsion tool applies torsion by holding part, to detect whether the pre-tightening force applied to belt pulley is within predetermined requirement, and when the pre-tightening force received by belt pulley is substandard, the pre-tightening force of pre-tightening nut is adjusted, to adjust the pre-tightening force of belt pulley within predetermined range.

Description

Technical Field

[0001] This utility model relates to the field of knitting flat knitting machine technology, and more specifically, to a shaking table torque detection fixture. Background Technology

[0002] The needle bed shaking mechanism plays a crucial role in knitting machinery, primarily in two aspects. First, by utilizing the relative movement between two needle beds on a flat knitting machine, this mechanism can knit a wavy structure formed by inclined loops. This structure has a unique wavy appearance effect, greatly enriching the visual depth and design of knitted fabrics.

[0003] Secondly, when performing the transfer operation between the front and rear needle beds of the flat knitting machine, the needle bed is moved to ensure accurate alignment between the transfer needle and the receiving needle, thereby ensuring the integrity and continuity of the pattern structure during the knitting process.

[0004] The rocking bed of a flat knitting machine typically includes key components such as a ball screw and thrust ball bearings. The ball screw is connected to a motor; when the motor drives the ball screw to rotate, the ball screw nut moves linearly along the screw, thus moving the needle bed. The thrust ball bearing is mainly used to withstand axial forces, that is, forces along the axis of the screw. In the rocking bed assembly, it is installed at both ends of the ball screw to support the screw and withstand the axial thrust generated during the lateral movement of the needle bed.

[0005] After the ball screw is installed, the end of the screw is pre-tightened with a nut to eliminate the axial backlash of the ball screw and meet the working requirements of the shaking table. The pre-tightening force of the nut needs to be controlled. If it is too small, the backlash will not be eliminated; if it is too large, the steel balls in the thrust ball bearing will be squeezed too tightly, affecting the service life.

[0006] Therefore, how to accurately control the preload of the nut at the shaft end of the ball screw is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] In view of this, the present invention provides a shaking table torque detection fixture to achieve accurate control of the preload of the ball screw shaft end nut.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A torque testing fixture for a shaking table includes a sleeve fitted onto the end of the lead screw shaft of the shaking table, wherein the inner ring of the sleeve is provided with a receiving cavity for accommodating a preload nut on the lead screw of the shaking table;

[0010] The sleeve is provided with a clamping part that is clamped onto the pulley of the rocker screw at the insertion end;

[0011] It also includes a torque tool that drives the sleeve to rotate and provides a predetermined preload to the pulley.

[0012] Preferably, in the above-mentioned shaking table torque testing fixture, an adjusting nut is integrally formed on the sleeve, and the torque tool is provided with an adjusting wrench that cooperates with the adjusting nut.

[0013] Preferably, in the above-mentioned shaking table torque detection fixture, the torque tool is equipped with a torque detection and display device for detecting the applied torque.

[0014] Preferably, in the above-mentioned shaking table torque testing fixture, the torque tool is an electronic torque wrench with a digital display screen.

[0015] Preferably, in the above-mentioned shaking table torque detection fixture, the clamping part includes a clamping plate for axially pressing the pulley at the shaft end of the shaking table screw, the clamping plate being coaxially arranged with the sleeve; clamping teeth extending around the periphery of the clamping plate for clamping the pulley.

[0016] Preferably, in the above-mentioned shaking table torque testing fixture, the circumference of the clamping plate is evenly distributed with a plurality of axially extending mounting holes, and the clamping teeth are positioning pins installed in the axially extending mounting holes;

[0017] The positioning pin is fitted into the tooth groove of the pulley.

[0018] Preferably, in the above-mentioned shaking table torque testing fixture, the shaft end of the sleeve is provided with a flange, and the clamping plate is fixed to the sleeve through the flange.

[0019] Preferably, in the above-mentioned shaking table torque testing fixture, the outer ring of the clamping plate is further provided with a plurality of radially extending radial mounting holes, and the positioning pin is detachably installed in the axial mounting hole; the radial mounting hole is used to arrange a locking device for locking the positioning pin.

[0020] Preferably, in the above-mentioned shaking table torque testing fixture, the axial mounting holes include four sets arranged in a cross pattern along the radial direction of the clamping plate, and each set of the axial mounting holes includes multiple holes.

[0021] Preferably, in the above-mentioned shaking table torque testing fixture, each group of axial mounting holes includes 3-9 holes, and the positioning pins include a plurality of holes spaced apart on the axial mounting holes.

[0022] The present invention provides a torque testing fixture for a shaking table, comprising a sleeve fitted onto the end of the shaking table lead screw shaft, the inner ring of which has a receiving cavity for accommodating a preload nut on the shaking table lead screw; the insertion end of the sleeve has a clamping part that clamps onto the pulley of the shaking table lead screw; and a torque tool for driving the sleeve to rotate and detecting the preload of the pulley. The preload nut is locked onto the end of the shaking table lead screw shaft. There are two preload nuts arranged in parallel, inner and outer sides. First, a torque wrench is used to apply preload force to install the inner preload nut, pressing the preload nut and the pulley together. Then, the outer preload nut is installed to adjust the tightness of the inner preload nut. When testing the preload, a sleeve is inserted into the end of the rocker screw shaft. The preload nut is accommodated in the sleeve housing of the tooling. The clamping part at the insertion end of the sleeve clamps the pulley. A torque tool applies torque through the clamping part to test whether the preload applied to the pulley is within the predetermined requirements. If the preload on the pulley is not up to standard, the preload of the preload nut is finely adjusted to bring the preload of the pulley within the predetermined range. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the working structure of the shaking table torque testing fixture provided in this application;

[0025] Figure 2 A schematic diagram of the first direction of the shaking table torque testing fixture provided in this application;

[0026] Figure 3 This is a schematic diagram of the second direction of the shaking table torque testing fixture provided in this application. Detailed Implementation

[0027] This utility model discloses a torque detection fixture for a shaking table, which enables accurate control of the preload of the nut at the shaft end of the ball screw.

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1-3 As shown, Figure 1 A schematic diagram of the working structure of the shaking table torque testing fixture provided in this application; Figure 2 A schematic diagram of the first direction of the shaking table torque testing fixture provided in this application; Figure 3 This is a schematic diagram of the second direction of the shaking table torque testing fixture provided in this application.

[0030] This application provides a torque testing fixture for a shaking table, including a sleeve 3 fitted onto the shaft end of a shaking table lead screw 2. The inner ring of the sleeve 3 is provided with a receiving cavity 31 for accommodating a preload nut 21 on the shaking table lead screw 2. The insertion end of the sleeve 3 is provided with a clamping part that clamps onto a pulley 5 of the shaking table lead screw 2. It also includes a torque tool 6 for driving the sleeve 3 to rotate and detecting the preload of the pulley 5.

[0031] The shaking table torque testing fixture is used to test the clamping force of the preload nut 21. There are two preload nuts 21 arranged in parallel, one on the inner side and one on the outer side. When installing the inner preload nut 21, it is preloaded to a predetermined value using a torque wrench. Then, the outer preload nut is installed, and its position is adjusted to control the tightness of the inner preload nut. Theoretically, the preload force applied to the preload nuts is the same, and the same rotational force is applied to the pulley 5, so the torque on the pulley 5 is the same as the preload force on the preload nut 21. However, in actual operation, the preload force between the inner preload nut and the pulley 5 varies. The shaking table torque testing fixture is used to check the rotational force of the pulley. If the test fails to meet the standard, the preload force of the preload nut 21 is fine-tuned to bring the preload force on the pulley 5 within the predetermined range.

[0032] The preload nut 21 is locked onto the end of the rocker screw 2 shaft, and by applying a preload force, the preload nut 21 and the pulley 5 are pressed together and installed into the end of the rocker screw 2 shaft. When the rocker torque testing fixture is used for testing, the sleeve receiving cavity 31 houses the preload nut 21, and the clamping part at the insertion end of the sleeve 3 clamps the pulley 5. The torque tool 6 applies torque through the sleeve 3, and the torque can be directly transmitted to the pulley 5 and drive its rotation.

[0033] During the torsion process, the preload nut 21 at the end of the ball screw does not rotate. The shaking table torque detection fixture only applies a predetermined torque to the pulley 5. The torque tool 6 can rotate the screw without triggering an alarm, indicating that the clamping force of the preload nut 21 is within the specified range. By reading the torque wrench value in real time, if a small torque is applied to rotate the screw, the preload of the preload nut 21 needs to be adjusted.

[0034] By setting up a shaking table torque detection fixture, the pulley 5 is directly driven to rotate. By applying rotational force to the pulley 5, it is determined whether the preload provided by the preload nut 21 to the pulley 5 meets the requirements. This ensures that the thrust ball bearing of the shaking table screw 2 is pressed tightly. While applying the preload, the thrust ball bearing is also prevented from bearing excessive preload, thus ensuring safety.

[0035] The shaking table 1 has two parallel shaking screws. Each shaking screw 2 has a pulley 5 at its shaft end. The two pulleys 5 rotate relative to each other, thereby driving the needle plate on the shaking screw 2 to move closer to or further away from the needle plate.

[0036] In one specific embodiment of this case, an adjusting nut 32 is integrally formed on the sleeve 3, and the torque tool 6 has an adjusting wrench that cooperates with the adjusting nut 32. The torque tool 6 has a torque detection and display device for detecting the applied torque. Preferably, the torque tool 6 is an electronic torque wrench with a digital display screen 61.

[0037] The sleeve 3 is installed on the rocker screw 2 at the first end in the axial direction, and the second end is integrally formed with an adjusting nut 32. Preferably, the adjusting nut 32 can be formed on the sleeve 3 by machining, or it can be welded to the cylindrical sleeve 3 by welding.

[0038] Furthermore, the torque tool 6 is an adjusting wrench, which can be an open-end wrench or an internal hex socket wrench; in this embodiment, an internal hex socket wrench is preferred. Meanwhile, to achieve accurate torque control, the torque tool is an electronic torque wrench with a digital display screen. This electronic torque wrench also features an alarm function, either audible or photoelectric, to display the preload in real time.

[0039] In a specific embodiment of this case, the clamping part includes a clamping plate 4 for axially clamping the pulley 5 at the shaft end of the rocker screw 2. The clamping plate 4 is coaxially arranged with the sleeve 3. Clamping teeth extend from the periphery of the clamping plate 4 to clamp the pulley 5.

[0040] Furthermore, the sleeve 3 has a flange 33 at its shaft end, and the clamping plate 4 is fixed to the sleeve 3 via the flange 33. The sleeve 3 and the clamping plate 4 are separate components. Since the clamping plate 4 needs to be clamped to the shaft side of the pulley 5, the clamping plate 4 can be machined independently. The flange 33 is machined on the sleeve 3. The sleeve 3 and the clamping plate 4 are locked together as one unit by screws via the flange 33.

[0041] In a specific embodiment of this case, the pressure plate 4 has a plurality of axial mounting holes 41 that extend axially around its periphery, and the clamping teeth are positioning pins 42 installed in the axial mounting holes 41; the positioning pins 42 are clamped in the tooth grooves of the pulley 5.

[0042] The outer ring of the pulley 5 is a gear structure. In order for the clamping plate 4 and the pulley 5 to be stably clamped, an axial mounting hole 41 is machined on the periphery of the clamping plate 4. The clamping tooth is a positioning pin 42 installed in the axial mounting hole 41 and extending axially. The positioning pin 42 is clamped in the tooth groove of the pulley 5. The clamping plate 4 drags the positioning pin 42 to rotate, thereby realizing the detection of the preload of the pulley.

[0043] Furthermore, the axial mounting holes 41 include four sets arranged in a cross shape along the radial direction of the clamping plate, and each set of axial mounting holes 41 includes multiple holes.

[0044] Furthermore, each group of axial mounting holes 41 includes 3-9 holes, preferably 5 holes per group, and the positioning pins 42 include multiple pins spaced apart on the axial mounting holes 41. The axial mounting holes 41 are arranged in a cross-shaped array, with 5 holes per group. Three positioning pins 42 can be installed at intervals, thus achieving uniform clamping around the pulley 5 and ensuring the safety of the pulley 5 tooth ring. The axial mounting holes 41 can also be evenly arranged around the circumference of the pressure plate 4. The positioning pins 42 can also be arranged corresponding to each tooth groove of the pulley tooth ring, further improving the stability of the pulley rotation drive.

[0045] In this embodiment, the outer ring of the pressure plate 4 is also provided with a plurality of radially extending radial mounting holes 43, and the positioning pin 42 is detachably installed in the axial mounting hole 41; the radial mounting holes 43 are used to arrange locking devices for locking the positioning pin 42.

[0046] Using the outer ring of the clamping plate 4, a radially extending radial mounting hole 43 is machined. The positioning pin 42 is detachably installed in the axial mounting hole 41. The radial mounting hole 43 is opposite to the axial mounting hole 41, and the positioning pin can be locked by arranging locking devices, such as screws or locking pins. Preferably, the radial mounting hole 43 is a threaded hole, and the positioning pin 42 is locked and positioned by a threaded pin or threaded pin.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fixture for detecting the torque of a shaking table, characterized in that, Includes a sleeve fitted onto the end of the rocker screw shaft, wherein the inner ring of the sleeve is provided with a receiving cavity for accommodating the preload nut on the rocker screw; The sleeve is provided with a clamping part that is clamped onto the pulley of the rocker screw at the insertion end; It also includes a torque tool for driving the sleeve to rotate and detecting the preload of the pulley.

2. The shaking table torque testing fixture according to claim 1, characterized in that, An adjusting nut is integrally formed on the sleeve, and the torque tool is equipped with an adjusting wrench that cooperates with the adjusting nut.

3. The shaking table torque testing fixture according to claim 2, characterized in that, The torque tool is equipped with a torque detection and display device for detecting the applied torque.

4. The shaking table torque testing fixture according to claim 3, characterized in that, The torque tool is an electronic torque wrench with a digital display screen.

5. The shaking table torque testing fixture according to any one of claims 1-4, characterized in that, The clamping part includes a clamping plate that axially clamps the pulley at the shaft end of the rocker screw, and the clamping plate is coaxially arranged with the sleeve; clamping teeth extend from the periphery of the clamping plate to clamp the pulley.

6. The shaking table torque testing fixture according to claim 5, characterized in that, The clamping plate has multiple axially extending mounting holes evenly distributed around its periphery, and the clamping teeth are positioning pins installed in the axially extending mounting holes. The positioning pin is fitted into the tooth groove of the pulley.

7. The shaking table torque testing fixture according to claim 6, characterized in that, The sleeve has a flange at its shaft end, and the clamping plate is fixed to the sleeve via the flange.

8. The shaking table torque testing fixture according to claim 6, characterized in that, The outer ring of the pressure plate is also provided with a plurality of radially extending mounting holes, and the positioning post is detachably installed in the axial mounting hole; the radial mounting hole is used to arrange a locking device for locking the positioning post.

9. The shaking table torque testing fixture according to claim 6, characterized in that, The axial mounting holes include four sets arranged in a cross shape along the radial direction of the clamping plate, and each set of the axial mounting holes includes multiple holes.

10. The shaking table torque testing fixture according to claim 9, characterized in that, Each set of axial mounting holes includes 3-9 holes, and the positioning pins include a plurality of pins spaced apart on the axial mounting holes.

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