Processing and clamping device for circular knitting machine loops

Abstract

The utility model discloses a kind of processing clamping devices of circular knitting machine steel ring, including circular clamp body, further including several arc-shaped pressing blocks, the several arc-shaped pressing blocks can be combined into complete annular, the annular is matched with the outer diameter of the clamp body;Arc-shaped pressing block has vertical direction screw hole so as to be fixed with clamp body, while there is horizontal direction screw hole so as to be fixed with the steel ring to be processed. Use the utility model, the stress state of steel ring when processing is consistent with actual work, can guarantee the machining precision of steel ring.

Description

Technical Field

[0001] This utility model belongs to the field of knitting machinery processing tooling technology, specifically relating to a processing clamping device for steel rings of circular knitting machines. Background Technology

[0002] Circular knitting machines mainly include underwear machines and sock machines. The steel ring is one of the most important components and also the one with the highest requirements for processing precision. Steel rings typically have problems such as thin walls, low rigidity, the positioning reference being in the same direction as the machining surface, and difficulty in clamping. Their diameter is relatively large, possibly reaching around 400mm, with a wall thickness of 3-6mm. Furthermore, the finished product is often segmented, and the workpiece end face has a wavy needle track. The design requires that every point on the needle track be within the design tolerance range. At the same time, these products also require quenching at HRC63 degrees Celsius, which can easily lead to quenching deformation and severe shrinkage, also affecting product precision.

[0003] Existing steel ring processing clamping devices use conventional clamping methods to hold the steel rings, which cannot simulate the actual stress conditions of the processed steel rings. Therefore, after long-term use, stress changes will lead to a decrease in its accuracy. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a processing and clamping device for steel rings of circular knitting machines.

[0005] Therefore, the technical solution adopted by this utility model is as follows: a processing and clamping device for a circular knitting machine steel ring, comprising a circular clamp body, characterized in that: it further comprises several arc-shaped pressure blocks, which can be combined to form a complete ring, the ring matching the outer diameter of the clamp body; the arc-shaped pressure blocks have vertical screw holes for fixing to the clamp body, and also have horizontal screw holes for fixing to the steel ring to be processed.

[0006] Furthermore, the annular shape of the arc-shaped pressure block assembly has a height that matches the steel ring to be processed; at any circumferential angle, the height of the arc-shaped pressure block is no greater than the corresponding height of the steel ring.

[0007] The horizontal screw hole of the arc-shaped pressure block is consistent with the direction of the inherent screw hole of the steel ring to be processed; and forms a certain angle with the radial direction.

[0008] The steel ring to be processed before finishing is not actually a blank; it has already undergone some rough machining, and its height direction already has a certain curved shape, presenting a wavy, ring-like shape. The arc-shaped pressure block is made according to these undulating curves, and after being assembled into a ring, it presents an undulating curve consistent with the designed undulations of the steel ring. At every specific angle, or specific point, the height of the pressure block is always lower than or equal to the designed height of the steel ring to facilitate the operation of the machining tools.

[0009] When the steel ring is installed on the machine, it is fixed to the frame by horizontal bolt holes, meaning the steel ring itself already has bolt holes. To provide better force distribution, the bolt holes are usually not standard radial, but at a certain angle to the radial direction, and the extension line of the bolt hole does not intersect the center of the circle; they are not even necessarily standard horizontal, but also at a certain angle to the horizontal direction. The pressure block of this utility model sets the bolt holes according to the bolt holes of the steel ring, ensuring that the two can be aligned, thereby connecting and fixing them.

[0010] As can be seen from the above description, this utility model actually completely simulates the working environment of the steel ring for clamping. This clamping method is made possible by segmenting the pressure block. Therefore, the stress state of the steel ring during processing is consistent with that during actual work, which can ensure the processing accuracy of the steel ring. Attached Figure Description

[0011] Figure 1 , Figure 2 This is a schematic diagram of this embodiment.

[0012] Figure 3 yes Figure 2 AA cross-section view.

[0013] Figure 4 yes Figure 3 A magnified view of part B.

[0014] Figure 5 This is an exploded view of this embodiment.

[0015] Figure 6 This is a schematic diagram of a steel rim. Detailed Implementation

[0016] See the attached drawings. This embodiment includes a circular clamp body 1 with an upwardly protruding outer edge for mounting arc-shaped pressure blocks 3. There are eight arc-shaped pressure blocks 3, which can be combined to form a 360° ring and are fixed to the outer edge of the clamp body 1 through screw holes in the vertical direction.

[0017] The steel ring 2 to be precision machined has the following shape: Figure 6 As shown, it has undergone preliminary processing. It can be seen that steel ring 2 is made up of two pieces, which allows it to be flexibly placed into a space with a slightly smaller inner diameter. Figure 4 As can be seen, steel ring 2 has a step with a large diameter at the bottom. If it were a single piece, it would not be able to be placed in the fixture or installed on the machine.

[0018] Each of the eight arc-shaped pressure blocks 3 has a horizontal screw hole, which matches the screw hole on the steel ring 2, so that the steel ring can be fixed in the inner ring formed by the arc-shaped pressure blocks, making the three fixed as one.

[0019] The ring formed by the pressure block has an undulating curve at its top that matches the steel ring but is not higher than the steel ring, thus allowing for easy finishing of the steel ring with a cutting tool.

Claims

1. A clamping device for processing steel rings of a circular knitting machine, comprising a circular clamp body, characterized in that: It also includes several arc-shaped pressure blocks, which can be combined to form a complete ring shape, which matches the outer diameter of the fixture body; the arc-shaped pressure blocks have vertical screw holes for fixing to the fixture body, and also have horizontal screw holes for fixing to the steel ring to be processed.

2. The processing and clamping device for the steel ring of a circular knitting machine as described in claim 1, characterized in that: The arc-shaped pressure block assembly has a ring-shaped height that matches the steel ring to be processed; at any circumferential angle, the height of the arc-shaped pressure block is no greater than the corresponding height of the steel ring.

3. The processing and clamping device for the steel ring of a circular knitting machine as described in claim 1 or 2, characterized in that: The horizontal screw hole of the arc-shaped pressure block is consistent with the direction of the inherent screw hole of the steel ring to be processed; and forms a certain angle with the radial direction.

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