High-precision rotary clamping jaw

Abstract

The utility model provides a high-precision rotary clamping jaw which comprises a main body, one side of the main body is detachably connected with a fixing plate, the fixing plate is provided with an original point sensor, the main body is detachably connected with a clamping jaw driver and a rotary driver through a mounting block, and the clamping jaw driver is in threaded connection with a clamping jaw mechanism through a clamping jaw driving lead screw. The clamping jaw mechanism is sleeved with the first synchronous wheel, bearings are arranged in the clamping jaw mechanism, the clamping jaw driving lead screw is sleeved with the first synchronous wheel and the bearings arranged on the two sides of the first synchronous wheel, and the first synchronous wheel is in transmission connection with the second synchronous wheel through a synchronous belt or a gear. According to the utility model, the driver is adopted for direct driving, the two ends of the first synchronizing wheel are sleeved with the bearings and are matched with the clamping jaw mechanism, so that the problems that the rotating clamping jaw precision is not high, and materials are easily damaged when easily damaged tubular materials are clamped in automatic production are effectively solved, the production efficiency is improved for enterprises, unnecessary material damage is avoided, the market prospect is achieved, and the production cost is reduced. Popularization and application are facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of clamping jaws, and in particular to a high-precision rotating clamping jaw. Background Art

[0002] With the continuous development of automated assembly technology, electric rotary grippers are being widely used in automated equipment, robots and medical automated equipment. Currently, there are many types of electric rotary grippers on the market with different functions, and all use integrated structures. In actual use, the concentricity of the rotating shaft is not high, resulting in a decrease in the accuracy of the grippers. In addition, when clamping fragile materials such as thin-walled tubular materials, the existing grippers cannot meet the use requirements, making them difficult to use in automated equipment that requires refined operations. In addition, the rotation function of most electric rotary grippers currently on the market or that have been announced requires the use of electric slip rings, which have poor anti-electromagnetic interference capabilities and short service life. Utility Model Content

[0003] The purpose of the present application is to improve the defects in the above-mentioned prior art and provide a high-precision rotating clamp, including a main body, one side of the main body is detachably connected with a fixing plate, the fixing plate is provided with an origin sensor, the main body is detachably connected with a clamp driver and a rotating driver through a mounting block, the clamp driver is threadedly connected to a clamp mechanism through a clamp driving screw, the clamp mechanism is sleeved in a first synchronous wheel, a bearing is provided inside, the clamp driving screw sleeve is provided with a first synchronous wheel and bearings provided on both sides of the first synchronous wheel, the first synchronous wheel is connected to the second synchronous wheel through a synchronous transmission structure, when the clamp driver is running, the clamp driving screw drives the clamp mechanism to perform telescopic, clamping and releasing actions; when the rotating driver is running, the second synchronous wheel drives the first synchronous wheel and the clamp mechanism to perform rotating actions;

[0004] Furthermore, a spacing adjustment screw is provided outside the rotary driver for adjusting the spacing between the second synchronous wheel and the first synchronous wheel, and the spacing adjustment screw is detachably connected to the rotating shaft of the second synchronous wheel;

[0005] Furthermore, the clamping mechanism includes a guide block threadedly connected to the clamping drive screw, a pull rod connected to one end of the guide block, a swing arm connected to the pull rod, a limit block sleeved on the outside of the pull rod, a clamping base and a clamping head detachably connected to the limit block;

[0006] Furthermore, the guide block is detachably connected to the positioning block and is provided with a limiting groove on one end surface. The shrinking chuck is sleeved on the outer ring of the positioning block, and the outer ring of the shrinking chuck is also sleeved with a shrinking sleeve.

[0007] Furthermore, the end surface of the limit block is provided with positioning holes and screw holes, which facilitates the replacement and installation of the limit block and the matching clamping claw base and chuck, while ensuring the clamping accuracy;

[0008] Further, the chuck can be a two-jaw, three-jaw or four-jaw chuck, used in combination with a matching jaw base and a limit block;

[0009] Furthermore, the bearing of the clamping jaw mechanism is arranged inside the guide block;

[0010] Furthermore, the limiting groove is also provided with a limiting screw, and the limiting screw is connected to the limiting groove through a through hole on the main body;

[0011] Furthermore, the positioning block is provided with longitudinal and transverse through holes, the longitudinal through hole is located at the center of the positioning block and is connected to the guide block, and the transverse through hole is connected to one end of the shrinking chuck for fixing and positioning the shrinking chuck;

[0012] Furthermore, a circular protrusion is provided at the end of the limiting block close to the first synchronous wheel, and is sleeved with the inner ring of the first synchronous wheel.

[0013] Compared with the prior art, the advantages of this application are:

[0014] Compared with the traditional electric rotary clamp, the utility model adopts the cooperation of the driver directly driven, bearings and clamp mechanism sleeved at both ends of the first synchronous wheel, which effectively solves the problem of low precision of the rotary clamp and easy damage to the material when clamping fragile tubular materials in automated production. It improves the production efficiency for the enterprise, avoids unnecessary material damage, has market prospects, and is suitable for popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of Example 1 of the present application;

[0016] Figure 2 This is a schematic diagram of the explosion structure of Example 1 of the present application;

[0017] Figure 3 This is a schematic diagram of the structure of the clamping mechanism of Example 1 of the present application;

[0018] Figure 4 This is a schematic diagram of the structure of Example 1 of the present application when the clamp has four jaws;

[0019] Figure 5 This is a schematic diagram of the main structure of Example 2 of this application

[0020] Figure 6 This is a schematic diagram of the explosion structure of Example 2 of the present application;

[0021] Figure 7 This is a schematic diagram of the structure of the clamping mechanism of Example 2 of the present application.

[0022] Description of the numbers in the figure:

[0023] Main body 1, limit screw 11, fixing plate 2, origin sensor 21, mounting block 3, clamping jaw driver 4, clamping jaw driving lead screw 41, rotating driver 5, spacing adjustment screw 51, clamping jaw mechanism 6, guide block 611, pull rod 612, swing arm 613, limit block 614, positioning block 615, limit groove 616, clamping jaw base 617, chuck 618, shrinking sleeve 619, shrinking chuck 620, first synchronous wheel 7, bearing 71, second synchronous wheel 8, synchronous belt 9. DETAILED DESCRIPTION

[0024] The technical solution of the present application will be clearly and completely described below in combination with the embodiments and the drawings in the specification. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the present application.

[0025] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Embodiment 1:

[0027] like Figure 1-2As shown, the utility model discloses a high-precision rotary clamp, comprising a main body 1 and a clamp mechanism 6, a fixing plate 2 is provided at one end of the main body 1, the fixing plate 2 is an integral structure, and is detachably connected to the main body 1 by screws, and the other end is detachably connected to the clamp driver 4 and the rotary driver 5 by mounting blocks 3, respectively, and screws are provided at the connection, and the mounting blocks 3 can be used in conjunction with the corresponding holes of the drivers, and there is no need to replace the drivers with matching holes, and only the mounting blocks 3 with suitable holes need to be replaced; the main body 1 is preferably an integral structure, and can also be a detachable split structure, the thickness of the fixing plate 2 on one side connected to the rotary driver 5 is less than the thickness of the fixing plate 2 on the other side connected to the clamp driver 4, and an origin sensor 2 is provided on the fixing plate 2 near the clamp mechanism 6 1, used to detect the reference position of the clamping mechanism 6, to ensure that it is restored to the reference position and the rotation angle accuracy after the operation is completed, a second synchronous wheel 8 is arranged at one end of the outside of the rotary driver 5, and the other end is connected to the external power supply through a pin, the rotary driver 5 is provided with a rotating shaft, the rotating shaft passes through the through hole on the mounting block 3, and is connected to the second synchronous wheel 8 at its end, the second synchronous wheel 8 and the first synchronous wheel 7 of the clamping driver 4 are connected by a synchronous belt 9 transmission, or it can be a gear meshing transmission, a spacing adjustment screw 51 is arranged on the end surface of the rotary driver 5 opposite to the clamping driver 4, which is used to adjust the spacing between the second synchronous wheel 8 and the first synchronous wheel 7, the spacing adjustment screw 51 passes through the main body 1 and the mounting block 3 in sequence, and is finally threadedly connected to the rotating shaft 81 of the second synchronous wheel 8.

[0028] The jaw driver 4 is connected to the main body 1 in parallel with the rotation driver 5 through the mounting block 3. A jaw driving screw 41 is provided at one end of the rotating shaft of the jaw driver 4. The jaw driving screw 41 passes through the through hole on the mounting block 3 and is connected to the guide block 611 of the jaw mechanism 6 at its end extending in the direction of the jaw mechanism 6. The other end of the jaw driver 4 is provided with a pin for connecting an external power supply. The first synchronous wheel 7 is sleeved on the outer periphery of the guide block 611. The first synchronous wheel 7 is sleeved at both ends with a bearing 71. According to usage requirements, the total number of bearings 71 at both ends of the first synchronous wheel 7 can also be more than 2. The outer ring diameter of the bearing 71 is smaller than the longitudinal and transverse inner diameters of the main body 1, and the inner ring at one end thereof is sleeved with the circular protrusion of the limit block 614 of the jaw mechanism 6. This structural design ensures the high concentricity and precision of the jaw.

[0029] The clamping mechanism 6 includes a guide block 611 , a pull rod 612 , a swing arm 613 , a limit block 614 , a clamping base 617 and a clamping head 618 . One end of the guide block 611 is connected to the clamping jaw driving screw 41 at one end of the clamping jaw driver 4, and the other end is connected to the pull rod 612. A bearing is arranged inside the guide block 611, which allows the chuck 618 to rotate infinitely. A limit block 614 is sleeved on the outside of the pull rod 612. One end of the limit block 614 is threadedly connected to the clamping jaw base 617, and the other end is provided with a circular protrusion which is threadedly connected to the inner circle of one end of the first synchronous wheel 7. The end face of the limit block 614 facing the chuck 618 is symmetrically provided with positioning holes and screw holes, which facilitates the replacement and installation of the limit block 614 and the matching clamping jaw base 617 and chuck 618, while ensuring the clamping accuracy. The clamping jaw base 617 and the chuck 618 can be two-claws, three-claws or four-claws according to the use requirements. The pull rod 612 is connected to the swing arm 613, and the end of the swing arm 613 is connected to the chuck 618. When the clamp driver 4 is driven, the clamp driving screw 41 drives the guide block 611 to move up and down, so that the pull rod 612 and the swing arm 613 drive the clamp 618 to clamp or release.

[0030] Embodiment 2:

[0031] The utility model provides a high-precision rotating clamp. Figure 1-5 , wherein the components identical or corresponding to those in Example 1 are designated by the same reference numerals as those in Example 1. For the sake of simplicity, only the differences from Example 1 are described below.

[0032] like Figure 4As shown, the fixing plate 3 of the utility model can also be an integrated structure with the same thickness at both ends, and can be used in conjunction with the clamping mechanism 6 of other structures. The clamping mechanism 6 of other structures can also be a shrinking clamping structure, including a guide block 611, a positioning block 615, a shrinking clamping sleeve 619 and a shrinking clamping head 620. One end of the guide block 611 is threadedly connected to the clamping drive screw 41 at one end of the clamping driver 4, and the other end is screwed to the positioning block 615. Further, a limiting groove 616 is provided on one end face of the guide block 611, and the limiting groove 616 is on the same end face as the power pin of the clamping driver 4. The limiting screw 11 is connected to the limiting groove 616 through the corresponding through hole on the main body, which can quickly and conveniently position and fix the clamping mechanism. A bearing is provided inside the guide block 611 for driving the shrinking clamping head 620 to rotate; a through hole is longitudinally provided at the center of the positioning block 615, which is threadedly connected to the guide block 611 by a screw, and positioning blocks 615 of different sizes can be conveniently installed as needed. The outer sleeve of the chuck 620 is sleeved, and further, the positioning block 615 is also provided with a transverse through hole, and the through hole corresponding to the chuck 620 is screwed to connect the chuck 620 to fix and position the chuck 620; the chuck sleeve 619 is sleeved on the outer side of the chuck 620, and the end close to the guide block 611 is the same length as the chuck 620, and the chuck sleeve 619 is sleeved with a fixing plate 3, a first synchronous wheel 7 and a bearing 71 from the outside to the inside, and the bearing 71 is provided at both ends of the first synchronous wheel 7, and the chuck 620 is close to the guide block 611. There are two arranged near the fixed plate 3 and one arranged towards the clamping jaw driver 4. The advantage of this structure is that when the shrinking chuck 620 performs actions such as clamping and rotating, the concentricity can be better guaranteed to be maintained at a high level and high precision; by unscrewing the limit screw 11, the shrinking sleeve 619 and the matching shrinking chuck 620 can be quickly and conveniently replaced. The shape of the shrinking chuck 620 is preferably a cylindrical horn-shaped opening, and the number of jaws is preferably 3. The appropriate shape and number of jaws can be used according to the needs of actual production.

[0033] When in use, the clamp driver 4 drives the guide block 611, and the guide block 611 drives the retracting clamp 620 to perform telescopic movement to achieve clamping and loosening; the second synchronous wheel 8 is driven by the rotary driver 5, and the first synchronous wheel 7 and the rotating clamp assembly matched therewith are further driven by the synchronous belt 9 to achieve rotational movement.

[0034] Compared with the traditional electric rotary clamp, the utility model adopts the cooperation of the driver directly driven, bearings and clamp mechanism sleeved at both ends of the first synchronous wheel, which effectively solves the problem of low precision of the rotary clamp and easy damage to the material when clamping fragile tubular materials in automated production. It improves the production efficiency for the enterprise, avoids unnecessary material damage, has market prospects, and is suitable for popularization and application.

[0035] The above embodiments are only preferred embodiments of the present utility model and are not limitations on the technical solutions of the present utility model. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present utility model.

Claims

1. A high-precision rotating clamp, comprising a main body (1), characterized in that: A fixing plate (2) is detachably connected to one side of the main body (1), and an origin sensor (21) is provided on the fixing plate (2). The main body is detachably connected to a clamping jaw driver (4) and a rotating driver (5) via a mounting block (3). The clamping jaw driver (4) is threadedly connected to a clamping jaw mechanism (6) via a clamping jaw driving screw rod (41). The clamping jaw mechanism (6) is sleeved in a first synchronous wheel (7) and is provided with a bearing inside. The clamping jaw driving screw rod (41) is sleeved with the first synchronous wheel (7) and bearings (71) provided on both sides of the first synchronous wheel (7). The first synchronous wheel (7) is transmission-connected to a second synchronous wheel (8) via a synchronous transmission structure. When the clamping jaw driver (4) is in operation, the clamping jaw driving screw rod (41) drives the clamping jaw mechanism (6) to perform telescopic, clamping and releasing actions; when the rotating driver (5) is in operation, the second synchronous wheel (8) drives the first synchronous wheel (7) and the clamping jaw mechanism (6) to perform a rotation action.

2. A high-precision rotating clamp according to claim 1, characterized in that: A spacing adjustment screw (51) is arranged outside the rotary driver (5) for adjusting the spacing between the second synchronous wheel (8) and the first synchronous wheel (7); the spacing adjustment screw (51) and the rotating shaft of the second synchronous wheel (8) are detachably connected.

3. A high-precision rotating clamp according to claim 1, characterized in that: The clamping mechanism (6) comprises a guide block (611) detachably connected to a clamping drive screw (41), a pull rod (612) connected to one end of the guide block (611), a swing arm (613) connected to the pull rod (612), a limit block (614) sleeved on the outside of the pull rod (612), a clamping base (617) detachably connected to the limit block (614), and a clamping head (618).

4. A high-precision rotating clamp according to claim 3, characterized in that: The guide block (611) is also detachably connected to the positioning block (615) and is provided with a limiting groove (616) on one end surface. The shrinking clamp (620) is sleeved on the outer ring of the positioning block, and the outer ring of the shrinking clamp (620) is also sleeved with a shrinking sleeve (619).

5. The high-precision rotating clamp according to claim 3, characterized in that: The end surface of the limit block (614) is provided with a positioning hole and a screw hole, which facilitates the replacement and installation of the limit block (614) and the matching clamping claw base (617) and the clamping head (618), while ensuring the clamping accuracy.

6. A high-precision rotating clamp according to claim 3, characterized in that: The chuck (618) can be a two-claw, three-claw or four-claw chuck, and is used in combination with a matching chuck base (617) and a limit block (614).

7. A high-precision rotating clamp according to claim 3, characterized in that: The bearing of the clamping jaw mechanism (6) is arranged inside the guide block (611).

8. The high-precision rotating clamp according to claim 4, characterized in that: The limiting groove (616) is also provided with a limiting screw (11), and the limiting screw (11) is connected to the limiting groove (616) through a through hole on the main body.

9. A high-precision rotating clamp according to claim 4, characterized in that: The positioning block (615) is provided with longitudinal and transverse through holes. The longitudinal through hole is located at the center of the positioning block (615) and is connected to the guide block (611). The transverse through hole is connected to one end of the shrinking chuck (620) and is used to fix and position the shrinking chuck (620).

10. The high-precision rotating clamp according to claim 3, characterized in that: The limiting block (614) is provided with a circular protrusion at the end close to the first synchronous wheel (7) and is sleeved with the inner ring of the first synchronous wheel (7).

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