Jig for machining spherical part

Abstract

The utility model relates to the technical field of processing jigs, in particular to a spherical part processing jig, which comprises a top seat and a plurality of groups of connecting arms arranged on the peripheral side of the top seat, connecting shafts are rotatably mounted on the connecting arms, clamping wheels are eccentrically sleeved on the connecting shafts, stop blocks are fixed on the connecting arms and positioned below the clamping wheels, and the stop blocks are fixed on the top seat. During use, the bottom sides of the multiple sets of clamping wheels firstly make contact with the spherical part, the spherical part pushes the clamping wheels to swing upwards, the centers of the multiple sets of clamping wheels are made to be far away from one another, and when the clamping wheels pass through the middle portion of the spherical part to the lower middle portion of the spherical part, the clamping wheels are clamped to the clamping wheels, and the clamping wheels are clamped to the clamping wheels. And as the lower swing center of the clamping wheels approaches again, the top seat is lifted upwards to drive the multiple groups of clamping wheels to clamp and support the spherical part, and automatic opening and closing of the clamping opening are realized in the process.

Description

Technical Field

[0001] The utility model relates to the technical field of processing jigs, in particular to a jig for processing spherical parts. Background Art

[0002] The processing of spherical parts involves the transfer and loading of spherical parts. Generally, the loading is done by hand. Due to the diameter and weight of the spherical parts, there are certain safety risks in hand-held loading.

[0003] In addition, general clamping fixtures often require power parts to control the opening and closing of the clamping jaws. Manual control of the power parts will affect the operating efficiency, while the use of mechanical power source control will increase the overall size and weight of the fixture, increasing the labor intensity during the carrying and transfer process.

[0004] The present invention provides a jig for processing spherical parts. The structural setting can solve the problem of manual or mechanical control of the opening and closing of the clamp, and the structural characteristics of the spherical part itself are used to give the jig a technical effect of automatically closing the clamp to complete the clamping. Utility Model Content

[0005] The utility model aims at least to solve the problem in the prior art that the opening and closing of the clamping jaws of a clamping fixture used for spherical pieces need to be controlled by a control piece when clamping and placing the spherical pieces.

[0006] The present invention provides a jig for processing spherical parts, which is achieved by the following specific technical means: it includes a top seat and multiple groups of connecting arms arranged on the circumference of the top seat, a connecting shaft is rotatably mounted on the connecting arm, an eccentric sleeve on the connecting shaft is provided with a clamping wheel, a stopper is fixed on the connecting arm below the clamping wheel, and in an initial state, the bottom side of the clamping wheel contacts the stopper under the action of gravity. When in use, according to the structural characteristics of the spherical part, the clamping jaws can be automatically opened during the downward movement through multiple groups of clamping wheels that can swing up and down, and can be automatically closed during the upward movement to clamp the middle and lower part of the spherical part.

[0007] Preferred technical solution 1: A rope is fixed on one side of each group of the clamping wheels away from the connecting shaft, and the top end of the rope passes through the top seat and extends to the top of the top seat.

[0008] Preferred technical solution two: The top ends of multiple groups of ropes are fixedly connected, so that the technical effect of pulling multiple groups of clamping wheels upward can be achieved at the same time.

[0009] Preferred technical solution three: A plurality of groups of slide grooves are provided on the circumferential side of the top seat, the number of which is equal to that of the connecting arms and the positions of which correspond one to one. Slide seats slide in the slide grooves, and the top ends of each group of connecting arms are fixed on a corresponding group of slide seats. By moving the position of the slide seats in the slide grooves, the clamping sizes between the multiple groups of clamping wheels can be greatly adjusted.

[0010] Preferred technical solution four: a screw rod is rotatably provided in each group of the slide grooves, and at the same time, a bevel gear 1 is sleeved on the end of each group of the screw rods, and a control shaft is rotatably provided on the top seat, and the control shaft is located between the multiple groups of screw rods and meshes with the bevel gear 1 through the bevel gear 2 sleeved on the top end.

[0011] Preferred technical solution five: a handle is fixed on the upper side of the top seat.

[0012] The above structure enables this solution to have the following beneficial effects:

[0013] 1. Through the connecting shaft, the eccentrically arranged clamping wheel, and the structural characteristics of the spherical part, the automatic opening and closing of the clamping opening formed between the multiple sets of clamping wheels can be realized during the clamping process of the spherical part, thereby improving the convenience of using the jig for spherical part processing and reducing the overall weight. In addition, the rotatable function of the multiple sets of clamping wheels can complete the clamping of spherical parts with diameters within a certain range;

[0014] 2. The screw rod, slider and control shaft can be used together to further improve the application range of the processing jig for spherical parts;

[0015] 3. The setting of the rope can quickly open the clamp when the spherical part is lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0018] Figure 2 This is the upper view of this scheme;

[0019] Figure 3 This is a schematic diagram of the structure of the screw rod, slider and control shaft of this solution;

[0020] Figure 4 This is a schematic diagram of the structure of the bracket and elastic member of this solution.

[0021] Among them, 1, top seat, 101, slide groove, 2, connecting arm, 3, connecting shaft, 4, clamping wheel, 5, block, 6, rope, 7, slide seat, 8, screw, 9, control shaft, 10, bevel gear one, 11, bevel gear two, 12, bracket, 13, elastic part, 14, handle. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Example 1, please refer to Figure 1-Figure 3 The jig for processing spherical parts comprises a top seat 1 and at least three groups of connecting arms 2 fixedly arranged on the side of the top seat 1. A handle 14 is fixed on the upper side of the top seat 1. The top seat 1 is lifted up and down and moved as a whole by the handle 14 to improve the convenience of operation. A connecting shaft 3 is rotatably installed at the bottom end of the connecting arm 2. A clamping wheel 4 is eccentrically sleeved on the connecting shaft 3. A stopper 5 is fixed on the connecting arm 2 below the clamping wheel 4. In the initial state, the bottom side of the clamping wheel 4 contacts the stopper 5 under the action of gravity. At this time, the sides of the multiple groups of clamping wheels 4 facing the center of the top seat 1 are in a close state, that is, the center of the clamping wheel 4 is located on the inner side of the connecting shaft 3. When in use, the top seat 1 is moved above a group of spherical parts, and then moved downward. The bottom sides of the multiple groups of clamping wheels 4 first contact the spherical parts, and the spherical parts are pushed up. The clamping wheel 4 swings upward, so that the centers of the multiple groups of clamping wheels 4 move away from each other toward the top of the connecting shaft 3. At this time, the space surrounded by the sides of the multiple groups of clamping wheels 4 toward the center of the top seat 1 is equal to or greater than the outer diameter of the spherical part. When the clamping wheel 4 passes through the middle to the middle and lower parts of the spherical part, the cross-sectional diameter of the middle and lower parts of the spherical part is smaller. Due to the friction resistance between the clamping wheel 4 and the spherical part or the weight of the clamping wheel 4, the center of the multiple groups of clamping wheels 4 swings downward again, that is, the center of the clamping wheel 4 moves to the bottom of the connecting shaft 3, and the bottom side of the clamping wheel 4 contacts the stopper 5 again. The blocking of the stopper 5 prevents the clamping wheel 4 from continuing to swing downward. At this time, the spherical part can be clamped and supported by the multiple groups of clamping wheels 4 by continuing to lift the top seat 1, and the automatic opening and closing of the clamping mouth is realized in the entire clamping process of the spherical part.

[0024] Example 2, based on Example 1, please refer to Figure 1 , a jig for processing spherical parts, a rope 6 is fixed on one side of each group of clamping wheels 4 away from the connecting shaft 3, the top end of the rope 6 passes through the top seat 1 and extends to the top of the top seat 1, and the top ends of multiple groups of ropes 6 are fixedly connected, so that the technical effect of pulling multiple groups of clamping wheels 4 up can be achieved at the same time. After the clamping wheels 4 clamp the spherical part and move it into place, the top seat 1 is pushed down again to drive the clamping wheels 4 away from the spherical part, and then the rope 6 is pulled up to pull the clamping wheels 4 up to complete the movement of moving the center of the clamping wheels 4 up to the top of the connecting shaft 3. At this time, the space surrounded by the sides of the multiple groups of clamping wheels 4 facing the center of the top seat 1 is equal to or greater than the outer diameter of the spherical part. At this time, the clamping wheels 4 and the spherical part can be easily separated.

[0025] Example 3, based on Example 2, please refer to Figure 1-Figure 3A jig for processing spherical parts, a plurality of groups of slide grooves 101 are provided on the periphery of the top seat 1, the number of which is equal to that of the connecting arms 2 and the positions of which correspond one to one, and slide seats 7 are slid in the slide grooves 101, and the top ends of each group of connecting arms 2 are fixed on the corresponding group of slide seats 7. By moving the position of the slide seats 7 in the slide grooves 101, the sizes of the clamping openings between the plurality of clamping wheels 4 can be greatly adjusted, and the applicable range of the jig for the size of spherical parts can be greatly improved; a screw rod 8 is rotatably provided in each group of slide grooves 101, and at the same time, a bevel gear 10 is sleeved on the end of each group of screw rods 8, and a control shaft 9 is rotatably provided on the top seat 1, and the control shaft 9 is located between the plurality of screw rods 8 and meshes with the bevel gear 10 through the bevel gear 2 11 sleeved on the top ends. The control shaft 9 is used to drive the plurality of screw rods 8 to rotate synchronously, and the spacing between the plurality of slide seats 7 can be controlled.

[0026] Example 4, based on Example 2, please refer to Figure 1-Figure 3 A jig for processing spherical parts, a bracket 12 is installed on the outer side of the connecting arm 2 above the connecting shaft 3, and an elastic member 13 is arranged on the bracket 12. The elastic member 13 is used to realize that after the clamping wheel 4 is swung on, the outer side of the clamping wheel 4 is in elastic contact with the elastic member 13, so as to avoid that the center of the clamping wheel 4 is difficult to rotate in time after flipping to the outer side of the connecting shaft 3, which affects the clamping efficiency of the spherical parts.

[0027] 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 jig for processing spherical parts, characterized in that: The invention comprises a top seat (1) and a plurality of connecting arms (2) arranged on the circumference of the top seat (1); a connecting shaft (3) is rotatably mounted on the connecting arm (2); an eccentric sleeve is provided with a clamping wheel (4) on the connecting shaft (3); a stopper (5) is fixed on the connecting arm (2) below the clamping wheel (4); when the clamping wheel (4) moves downward under the action of gravity, the bottom side contacts the stopper (5), and at this time, the center of the clamping wheel (4) is located on the inner side of the connecting shaft (3).

2. A spherical part processing tool according to claim 1, characterized in that: A rope (6) is fixed on one side of each group of the clamping wheels (4) away from the connecting shaft (3), and the top end of the rope (6) passes through the top seat (1) and extends to the top of the top seat (1), and the top ends of the multiple groups of the ropes (6) are fixedly connected.

3. A spherical piece processing tool according to claim 1 or 2, characterized in that: The top seat (1) is provided with a plurality of groups of slide grooves (101) whose number is equal to the number of the connecting arms (2) and whose positions correspond one to one. Slide seats (7) slide in the slide grooves (101), and the top ends of each group of connecting arms (2) are fixed on a corresponding group of slide seats (7).

4. A jig for processing spherical parts according to claim 3, characterized in that: A screw rod (8) is rotatably provided in each group of the slide grooves (101), and a bevel gear 1 (10) is sleeved on the end of each group of the screw rods (8). A control shaft (9) is rotatably provided on the top seat (1), and the control shaft (9) is located between the multiple groups of screw rods (8) and meshes with the bevel gear 1 (10) through the bevel gear 2 (11) sleeved on the top.

5. A jig for processing spherical parts according to claim 1 or 2, characterized in that: A bracket (12) is installed on the outer side of the connecting arm (2) above the connecting shaft (3), and an elastic member (13) is arranged on the bracket (12). When the clamping wheel (4) is pushed up by the spherical member, the outer side of the clamping wheel (4) is in elastic contact with the elastic member (13).

6. A spherical piece processing tool according to claim 1, characterized in that: The connecting arms (2) are distributed in at least three groups on the peripheral side of the top seat (1).

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