Cutting tool for injection molding thin-wall guide ring

Abstract

The utility model relates to an injection molding thin-wall guide ring cutting tool which comprises a chuck mechanism, the chuck mechanism comprises a chuck assembly and a plurality of clamping jaw assemblies, and the clamping jaw assemblies are circumferentially and evenly distributed on the chuck assembly and can synchronously slide on the chuck assembly in the radial direction. The side, away from the chuck assembly, of each clamping jaw assembly is connected with a lining. Each lining is in an arc shape; the plurality of linings are matched with the guide ring; a plurality of corresponding cut-off grooves are formed in the outer wall of each lining in parallel; the cut-off groove is parallel to the arc line of the lining; and the plurality of cut-off grooves of the plurality of linings form a plurality of annular grooves. According to the utility model, firstly, the guide ring with higher height is subjected to injection molding, then the guide ring is supported and fixed through the plurality of linings, so that the guide ring is fixed on the chuck mechanism, and is cut into a plurality of lower guide rings through a cutter of a numerical control machine tool, so that the processing time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of guide ring processing, and particularly relates to a cutting tool for an injection-molded thin-wall guide ring. Background Art

[0002] In a hydraulic cylinder system, the guide ring is the most important sealing part, which determines the overall performance of the sealing system. The piston rod needs to perform precise linear reciprocating motion, and the guide ring can ensure that the piston rod always moves in the correct direction, preventing it from deviating, skewing, etc. during the telescopic process.

[0003] In the process of traditional guide ring processing and forming, it is generally injection-molded once. However, for the production of a large number of guide rings with a relatively low height, the processing time is long and the production efficiency is low. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a cutting tool for an injection-molded thin-wall guide ring, which can fix a relatively high guide ring and cut it into multiple relatively low guide rings by a cutting tool of a numerical control machine tool, thereby shortening the processing time and improving the production efficiency.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is a cutting tool for an injection-molded thin-wall guide ring, including a chuck mechanism.

[0006] The chuck mechanism includes a chuck assembly and a plurality of jaw assemblies. The plurality of jaw assemblies are circumferentially distributed on the chuck assembly and can synchronously slide radially on the chuck assembly.

[0007] One side of each jaw assembly away from the chuck assembly is connected with a lining; each lining is arc-shaped; the plurality of linings cooperate with the guide ring; a plurality of corresponding cutting grooves are parallelly arranged on the outer wall of each lining; the cutting grooves are parallel to the lining arc; the plurality of cutting grooves of the plurality of linings form a plurality of annular grooves.

[0008] Preferably, a jaw chassis is provided between each lining and each jaw assembly; the jaw chassis is fan-shaped and is respectively connected with the jaw assembly and the lining.

[0009] Preferably, the outer diameter of the jaw chassis is larger than the outer diameter of the lining.

[0010] Preferably, each lining is provided with at least two first bolt holes and a first positioning hole; the first bolt holes and the first positioning hole penetrate through the lining and the jaw chassis.

[0011] Preferably, each jaw chassis is provided with at least one second bolt hole and a second positioning hole; the second bolt holes and the second positioning hole extend into the jaw assembly.

[0012] The present utility model relates to a cutting tool for an injection-molded thin-wall guide ring, which has the following advantages compared with the prior art:

[0013] (1) First, a guide ring with a relatively high injection molding height is produced, and then the guide ring is supported and fixed by a plurality of inner linings, so that the guide ring is fixed on the chuck mechanism. The guide ring is cut into a plurality of lower guide rings by a cutting tool of a numerical control machine tool, which speeds up the processing time and improves the production efficiency;

[0014] (2) Through the cutting groove, when a part of the guide ring is cut off by the cutting tool, the head of the cutting tool can extend into the cutting groove to prevent the cutting tool from colliding with the inner lining and damaging the tool;

[0015] (3) The design is simple, easy to use, and the manufacturing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram when the guide ring is fixed on the inner lining;

[0018] Figure 3 is a schematic structural diagram after removing the inner lining. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0020] As Figures 1 - 3 shown, a cutting tool for an injection-molded thin-wall guide ring includes a chuck mechanism,

[0021] The chuck mechanism includes a chuck assembly 11 and a plurality of jaw assemblies 12. The plurality of jaw assemblies 12 are circumferentially distributed on the chuck assembly 11 and can synchronously slide radially on the chuck assembly 11. In this embodiment, the chuck mechanism is a three-jaw chuck;

[0022] One side of each jaw assembly 12 away from the chuck assembly 11 is connected to an inner lining 2; each inner lining 2 is arc-shaped; the plurality of inner linings 2 cooperate with the guide ring 4, and the plurality of inner linings 2 form an annular member. The guide ring 4 can be sleeved on the outer wall of the plurality of inner linings 2. By controlling the plurality of jaw assemblies 12 to synchronously slide slightly outward, that is, the jaw assemblies 12 move away from the center of the chuck assembly 11, the plurality of inner linings 2 move outward synchronously, thereby fixing the guide ring 4. Since the guide ring 4 is made of materials such as polyoxymethylene and nylon, the guide ring 4 is supported and fixed by the plurality of inner linings 2 to prevent the guide ring 4 from bending during cutting. In addition, each inner lining 2 corresponds to each jaw assembly 12, which is convenient for the jaw assembly 12 to fix guide rings 4 with different diameters when moving;

[0023] On the outer wall of each of the liners 2, a plurality of corresponding cutting grooves 21 are parallelly formed; the cutting grooves 21 are parallel to the arc of the liner 2; the plurality of cutting grooves 21 of the plurality of liners 2 form a plurality of annular grooves. The chuck mechanism is installed on the numerical control machine tool, and then the guide ring 4 to be cut is fixed on the plurality of liners 2. The cutting tool of the numerical control machine tool turns and cuts the guide ring 4. The cutting position of the cutting tool corresponds to the cutting groove 21. When the cutting tool cuts off a part of the guide ring 4, the head of the cutting tool can extend into the cutting groove 21. Through the cutting groove 21, it is possible to prevent the cutting tool from colliding with the liner 2 after cutting off the guide ring 4 and damaging the tool.

[0024] In this embodiment, a chuck base plate 3 is provided between each of the liners 2 and each chuck assembly 12; the chuck base plate 3 is fan-shaped and is respectively connected to the chuck assembly 12 and the liner 2. The liner 2 is fixed through the chuck base plate 3 to strengthen the connection between the chuck assembly 12 and the liner 2, and prevent the liner 2 from loosening during cutting and causing an accident of tool damage.

[0025] In this embodiment, the outer diameter of the chuck base plate 3 is larger than the outer diameter of the liner 2. When fixing the guide ring 4, the guide ring 4 is fitted to the chuck base plate 3, which is convenient for installation and avoids the inclination of the guide ring 4.

[0026] In this embodiment, each of the liners 2 is provided with at least two first bolt holes 22 and first positioning holes 23; the first bolt holes 22 and the first positioning holes 23 penetrate through the liner 2 and the chuck base plate 3. Bolts and positioning pins are respectively installed in the first bolt holes 22 and the first positioning holes 23. The liner 2 and the chuck base plate 3 are bolt-connected through bolts and nuts, and the positioning pin is in interference fit with the first positioning hole 23. By inserting the positioning pin into the first positioning hole 23, the fixation between the liner 2 and the chuck base plate 3 is strengthened to prevent the liner 2 from loosening.

[0027] In this embodiment, each of the chuck base plates 3 is provided with at least one second bolt hole 31 and a second positioning hole 32; the second bolt hole 31 and the second positioning hole 32 extend into the chuck assembly 12. Bolts and positioning pins are also respectively installed in the second bolt holes 31 and the second positioning holes 32. The chuck base plate 3 and the chuck assembly 12 are bolt-connected by screwing the bolts into the second bolt holes 31 of the chuck assembly 12, and the positioning pin is in interference fit with the second positioning hole 32. By inserting the positioning pin into the second positioning hole 32, the fixation between the chuck base plate 3 and the chuck assembly 12 is strengthened to prevent the chuck base plate 3 from loosening.

[0028] Usage method of the utility model: Install the chuck mechanism on a numerically controlled machine tool. Then, put the guide ring 4 to be cut on the outer walls of a plurality of inner linings 2, and at the same time make the bottom surface of the guide ring 4 fit with the chuck chassis 3. By controlling the plurality of chuck assemblies 12 to slide slightly outwards, the plurality of inner linings 2 are propped up to fix the guide ring 4. Subsequently, cut according to the requirements of the actual product height. The cutting tool of the numerically controlled machine tool cuts the guide ring 4, and the cutting position of the cutting tool corresponds to the cutting groove 21. When a part of the guide ring 4 is cut off by the cutting tool, the head of the cutting tool extends into the cutting groove 21, and the cutting tool retracts to obtain the finished product.

Claims

1. An injection-molded thin-wall guide ring cutting tooling, characterized in that, including a chuck mechanism, the chuck mechanism includes a chuck assembly (11) and a plurality of jaw assemblies (12), the plurality of jaw assemblies (12) are circumferentially and evenly distributed on the chuck assembly (11), and can synchronously slide radially on the chuck assembly (11); a lining (2) is connected to one side of each jaw assembly (12) away from the chuck assembly (11); each lining (2) is arc-shaped; the plurality of linings (2) cooperate with a guide ring (4); a plurality of corresponding cutting grooves (21) are parallelly formed on the outer wall of each lining (2); the cutting grooves (21) are parallel to the arc of the lining (2); the plurality of cutting grooves (21) of the plurality of linings (2) form a plurality of annular grooves.

2. The injection-molded thin-wall guide ring cutting tooling according to claim 1, characterized in that, a jaw chassis (3) is provided between each lining (2) and each jaw assembly (12); the jaw chassis (3) is fan-shaped and is respectively connected to the jaw assembly (12) and the lining (2).

3. The injection-molded thin-wall guide ring cutting tooling according to claim 2, wherein the outer diameter of the jaw chassis (3) is larger than the outer diameter of the lining (2).

4. The injection-molded thin-wall guide ring cutting tooling according to claim 2, wherein, each lining (2) is provided with at least two first bolt holes (22) and a first positioning hole (23); the first bolt holes (22) and the first positioning hole (23) penetrate through the lining (2) and the jaw chassis (3).

5. The injection-molded thin-wall guide ring cutting tooling according to claim 2, characterized in that, each jaw chassis (3) is provided with at least one second bolt hole (31) and a second positioning hole (32); the second bolt holes (31) and the second positioning holes (32) extend into the jaw assembly (12).

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