Hand-tight chuck for glass fiber pipe processing

Abstract

The utility model relates to the technical field of machine tool clamps, in particular to a hand-tight chuck for glass fiber pipe machining, which comprises a chuck body, a chain wheel and a plurality of clamping jaws, the chain wheel is movably arranged on the inner side of the chuck body and is coaxial with the chuck body, and the clamping jaws are slidably arranged at the upper end of the chuck body and are meshed with the chain wheel. The chuck is characterized in that the chuck further comprises a hand wheel; the chain wheel, the hand wheel and the chuck body are coaxial; the hand wheel is fixedly connected with the chain wheel and located on the lower side of the chain wheel. According to the utility model, the clamping force of the chuck can be controlled to ensure that the glass fiber pipe does not deform when the glass fiber pipe is clamped, so that the use performance of the chuck is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool fixtures, and specifically relates to a hand-tightened chuck used for processing glass fiber tubes. Background Art

[0002] The three-jaw chuck is composed of a chuck body, jaws and a jaw driving mechanism. The principle is to use the jaw driving mechanism to make the three jaws evenly distributed on the chuck body move radially to clamp and position the workpiece. It is a machine tool accessory.

[0003] The clamping conditions when clamping the glass fiber tube for stretching or welding are as follows: high temperature (up to 300 degrees Celsius) and long process time (some processes take 8 hours), the clamping force should be relatively small. If a standard three-jaw self-centering chuck is used and a wrench is used to operate the chuck, the twisting distance of the wrench is not easy to grasp and then reflected on the jaws, which makes it easy to make the clamping force generated by the jaws difficult to control, and seriously cause the deformation of the glass fiber tube. In addition, the standard chuck cannot withstand long-term high temperature. Due to thermal deformation, the tooth plate and the chuck body embryo will often lock or the jaws will also deform under continuous high temperature conditions, reducing the clamping accuracy, causing the chuck to fail to clamp the workpiece normally, and ultimately affecting the processing of the glass fiber tube. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a hand-tightened chuck for glass fiber tube processing, which can make the clamping force of the chuck controllable and improve the performance of the chuck.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hand-tightened chuck for glass fiber tube processing, comprising a chuck body, a toothed disc and a plurality of claws, the toothed disc being movably arranged inside the chuck body and the toothed disc and the chuck body being coaxial, a plurality of claws being slidably arranged on the upper end of the chuck body and the claws being engaged with the toothed disc, characterized in that: the chuck also includes a handwheel; the toothed disc, the handwheel and the chuck body are coaxial; the handwheel is fixedly connected to the toothed disc and the handwheel is located at the lower side of the toothed disc; the outer diameter of the handwheel is larger than the outer diameter of the toothed disc.

[0006] Preferably, the chuck also includes a supporting ring; the chuck body consists of a chuck cover and a shaft cylinder; the shaft cylinder is fixedly arranged on the lower side of the chuck cover; the toothed disc is movably mounted on the shaft cylinder through the supporting ring; and the handwheel is mounted on the outer side of the supporting ring.

[0007] Preferably, the chuck further comprises a clamp; an annular groove is formed on the outer periphery of the shaft tube; the clamp is at least partially embedded in the groove; and the support ring is located on the upper side of the clamp.

[0008] Preferably, the outer diameter of the hand wheel is the same as the outer diameter of the chuck cover.

[0009] Preferably, the chainring is connected to the handwheel via screws.

[0010] Preferably, the clamping claw comprises an upper claw and a lower claw, wherein the upper claw is fixedly arranged on the lower claw; the lower claw is slidably arranged on the upper end of the chuck cover and engages with the toothed disc.

[0011] Preferably, a clamping groove is provided on the upper claw, and the bottom of the clamping groove is an arc-shaped structure.

[0012] Preferably, an anti-slip groove with a knurled structure is provided on the outer periphery of the hand wheel.

[0013] Preferably, the chuck body is an integrated structure.

[0014] Preferably, the chuck further comprises a positioning screw; the screw rod of the positioning screw is arranged to penetrate the shaft barrel longitudinally.

[0015] Compared with the prior art, the utility model has the following beneficial effects: 1. By arranging a claw driving mechanism and three groups of claws on the chuck body, the three groups of claws are driven by the claw driving mechanism, and the claw driving mechanism is composed of a toothed disc and a hand wheel, the toothed disc and the hand wheel are coaxially arranged and fixed to each other, the outer diameter of the toothed disc is smaller than the outer diameter of the hand wheel, the adjustable range of the toothed disc is expanded, and the three groups of claws are engaged with the toothed disc, so that the clamping force of the chuck is controllable and small, thereby ensuring that the glass fiber tube is not deformed when clamping the glass fiber tube;

[0016] The upper jaw is also provided with a clamping groove, the bottom of which is an arc-shaped structure, so that when the upper jaw clamps the glass fiber tube, the force on the glass fiber tube is more uniform, and the deformation of the glass fiber tube due to uneven force is avoided;

[0017] By subjecting the components of the chuck to HT300 heat treatment and phosphating treatment, the chuck can have anti-rust and anti-corrosion properties and meet the processing requirements of glass fiber tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a longitudinal cross-sectional schematic diagram of the hand-tightened chuck of the utility model;

[0019] Figure 2 This is a structural schematic diagram of the upper side of the hand-tightening chuck of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the upper side of the chuck body of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the lower side of the chuck body of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the clamp of the utility model.

[0023] In the figure: 1 chuck body, 2 toothed disc, 3 upper jaw, 4 lower jaw, 5 hand wheel, 6 support ring, 7 clamp, 8 fastening screw, 9 connecting screw, 10 positioning screw, 11 chuck cover, 12 shaft cylinder, 111 I-shaped groove, 121 groove, 31 clamping groove. DETAILED DESCRIPTION

[0024] The following describes the specific implementation of the utility model in detail in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the utility model. Although the utility model is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative, rather than limiting the scope of the utility model.

[0025] Specific embodiment 1: Please refer to Figure 1-5 A hand-tightened chuck for glass fiber tube processing includes: a chuck body 1, claws and a claw driving mechanism, wherein the claws are provided in three groups, and the three groups of claws and the claw driving mechanism are all arranged on the chuck body 1, wherein the claws are all slidably connected to the chuck body 1, and the claw driving mechanism is arranged on the lower side of the claws. Under the action of the claw driving mechanism, the three groups of claws can move radially at the same time to achieve automatic centering and clamping. This hand-tightened chuck is mainly used to clamp highly brittle workpieces such as glass fiber tubes, and can control the clamping force to avoid damage to highly brittle workpieces such as glass fiber tubes.

[0026] The chuck body 1 is composed of a chuck cover 11 and a shaft cylinder 12. Specifically, the chuck cover 11 is a cover-like structure with a through hole opened at the axis, and the shaft cylinder 12 is a tubular structure. The shaft cylinder 12 is fixedly arranged on the lower side of the chuck cover 11, and the shaft cylinder 12 is coaxial with the through hole. In the present embodiment, the chuck body 1 is an integrated structure. The upper end of the chuck cover 11 is provided with an I-shaped groove 111 which is connected with the through hole and the lower space of the chuck cover 11, and the I-shaped groove 111 is used for the installation of the claws. There are three I-shaped grooves 111, and the three I-shaped grooves 111 are evenly distributed around the axis of the chuck cover 11. The three I-shaped grooves 111 are arranged corresponding to the three groups of claws. The outer periphery of the lower end of the shaft cylinder 12 is provided with an annular groove 121.

[0027] Taking a group of clamping jaws as an example, the clamping jaws include an upper jaw 3, a lower jaw 4, and a plurality of fastening screws 8. The lower jaw 4 is slidably arranged in the I-shaped groove 111, and the upper jaw 3 is fixed to the upper end of the lower jaw 4 by the fastening screws 8; the upper jaw 3 is also provided with a clamping groove 31, and the bottom of the clamping groove 31 is an arc-shaped structure, so that when the upper jaw 3 clamps the glass fiber tube, the force on the glass fiber tube is more uniform, avoiding deformation of the glass fiber tube due to uneven force.

[0028] The claw driving mechanism includes a toothed disc 2, a hand wheel 5, a support ring 6, a clamp 7 and a plurality of connecting screws 9. The clamp 7 is sleeved on the shaft cylinder 12 and partially embedded in the groove 121. The support ring 6 is sleeved on the shaft cylinder 12 and the inner side of the chuck cover 11. The support ring 6 is coaxial with the chuck cover 11. At the same time, the support ring 6 is located on the upper side of the clamp 7. The position of the support ring 6 is stable through the limitation of the clamp 7. The toothed disc 2 is an annular structure. The toothed disc 2 is sleeved on On the shaft cylinder 12, inside the chuck cover 11, the chainring 2 is located on the upper side of the supporting ring 6, and the chainring 2 is slidably connected to the supporting ring 6 and the chuck body 1; the handwheel 5 is sleeved on the outer side of the supporting ring 6 and the handwheel 5 is fixedly connected to the chainring 2 by a plurality of connecting screws 9, and the handwheel 5 is slidably connected to the supporting ring 6 and the chuck body 1; the upper end surface of the chainring 2 is provided with an Archimedes spiral groove, and the lower end of the lower claw 4 is engaged with the Archimedes spiral groove of the chainring 2.

[0029] Furthermore, an anti-skid groove with a knurled structure is provided on the outer periphery of the hand wheel 5 .

[0030] In order to maintain the consistency of the appearance of the chuck, the outer diameter of the hand wheel 5 is the same as the outer diameter of the chuck cover 11 , and the lower end surface of the hand wheel 5 is flush with the lower end surface of the chuck cover 11 .

[0031] When the handwheel 5 is turned, the chainring 2 rotates synchronously. At this time, the chainring 2 can drive the three groups of claws to move radially at the same time to achieve automatic centering and clamping. The handwheel 5 drives the chainring 2 to rotate synchronously, and the Archimedean screw groove on the chainring 2 drives the lower claw 4 and the upper claw 3 to clamp the glass fiber tube; when the glass fiber tube needs to be clamped, because the outer diameter of the handwheel 5 is larger than the outer diameter of the chainring 2, the operating range at the outer edge of the handwheel 5 is larger than the operating periphery of the outer edge of the chainring 2. It can be understood that the angle of rotation around the axis is more refined on the outer edge of the handwheel 5. Based on this, the clamping force of the chuck is controllable and small, thereby ensuring that the glass fiber tube is not deformed when clamping the glass fiber tube.

[0032] In this embodiment, the chuck also includes three positioning screws 10, and the screw rods of the three positioning screws 10 are all arranged to longitudinally penetrate the shaft tube 12. When using the chuck, the chuck needs to be connected and fixed to the connecting disk of the external device through the positioning screws 10.

[0033] When using a chuck to clamp a glass fiber tube, the existing chuck cannot withstand long-term high temperature. Due to thermal deformation, the toothed disc 2 and the chuck body 1 will often be locked or the jaws will also be deformed under continuous high temperature conditions, affecting the clamping accuracy and causing the chuck to be unable to clamp the workpiece normally. Based on this, in this embodiment, the upper jaw 3 needs to be made of high-temperature resistant alloy stainless steel material to ensure reliable clamping accuracy of the chuck under high temperature conditions.

[0034] In addition, due to the continuous high temperature, the anti-rust oil and grease on the chuck will quickly flow out or evaporate. Therefore, when the chuck in this embodiment is manufactured, the components of the chuck need to undergo HT300 heat treatment and phosphating treatment, and the claws and toothed disc 2 are treated with a blackening process, so that the chuck can have anti-rust and anti-corrosion properties and meet the processing requirements of glass fiber tubes.

[0035] Through the technical solution, a claw driving mechanism and three groups of claws are arranged on the chuck body, and the three groups of claws are driven by the claw driving mechanism, and the claw driving mechanism is composed of a toothed disc and a handwheel, the toothed disc and the handwheel are coaxially arranged and fixedly connected to each other, the outer diameter of the toothed disc is smaller than the outer diameter of the handwheel, the adjustable range of the toothed disc is expanded, and the three groups of claws are engaged with the toothed disc, so that the clamping force of the chuck is controllable and small, thereby ensuring that the glass fiber tube is not deformed when clamping the glass fiber tube.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hand-tightened chuck for glass fiber tube processing, comprising a chuck body (1), a toothed disc (2) and a plurality of claws, wherein the toothed disc (2) is movably arranged inside the chuck body (1) and the toothed disc (2) and the chuck body (1) are coaxial, and the plurality of claws are slidably arranged on the upper end of the chuck body (1) and the claws are engaged with the toothed disc (2), characterized in that: The chuck further comprises a hand wheel (5); the toothed disc (2), the hand wheel (5) and the chuck body (1) are coaxial; the hand wheel (5) is fixedly connected to the toothed disc (2) and the hand wheel (5) is located at the lower side of the toothed disc (2); and the outer diameter of the hand wheel (5) is greater than the outer diameter of the toothed disc (2).

2. The hand-tightened chuck for glass fiber tube processing according to claim 1, characterized in that: The chuck further comprises a supporting ring (6); the chuck body (1) comprises a chuck cover (11) and a shaft cylinder (12); the shaft cylinder (12) is fixedly arranged on the lower side of the chuck cover (11); the toothed disc (2) is movably sleeved on the shaft cylinder (12) via the supporting ring (6); and the hand wheel (5) is sleeved on the outer side of the supporting ring (6).

3. The hand-tightened chuck for glass fiber tube processing according to claim 2, characterized in that: The chuck further comprises a clamp (7); an annular groove (121) is formed on the outer circumference of the shaft cylinder (12); the clamp (7) is at least partially embedded in the groove (121); and the support ring (6) is located on the upper side of the clamp (7).

4. The hand-tightened chuck for glass fiber tube processing according to claim 2, characterized in that: The outer diameter of the hand wheel (5) is the same as the outer diameter of the chuck cover (11).

5. The hand-tightened chuck for glass fiber tube processing according to claim 1, characterized in that: The toothed disc (2) and the hand wheel (5) are connected via screws.

6. The hand-tightened chuck for glass fiber tube processing according to claim 2, characterized in that: The clamping jaw comprises an upper jaw (3) and a lower jaw (4); the upper jaw (3) is fixedly arranged on the lower jaw (4); the lower jaw (4) is slidably arranged on the upper end of the chuck cover (11) and meshes with the toothed disc (2).

7. The hand-tightened chuck for glass fiber tube processing according to claim 6, characterized in that: The upper claw (3) is provided with a clamping groove (31), and the bottom of the clamping groove (31) is an arc-shaped structure.

8. The hand-tightened chuck for glass fiber tube processing according to claim 1, characterized in that: An anti-slip groove with a knurled structure is provided on the outer circumference of the hand wheel (5).

9. The hand-tightened chuck for glass fiber tube processing according to claim 1 or 2, characterized in that: The chuck body (1) is an integrated structure.

10. The hand-tightened chuck for glass fiber tube processing according to claim 2, characterized in that: The chuck further comprises a positioning screw (10); the screw rod of the positioning screw (10) is arranged to penetrate the shaft tube (12) longitudinally.

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