A movable clamp

Abstract

The utility model provides a movable clamp, which relates to the technical field of mechanical clamps. The movable clamp includes a base, two clamping assemblies and a radial positioning assembly. The two clamping assemblies are arranged on the base at intervals. The two clamping assemblies are used to clamp a workpiece. The radial positioning assembly is arranged on the base and located between the two clamping assemblies. The radial positioning assembly is used to initially position the workpiece radially before the two clamping assemblies clamp the workpiece. The utility model performs initial radial positioning on the workpiece through the radial positioning assembly. Before the two clamping assemblies clamp the workpiece, initial radial positioning is performed, so that the radial positioning of the workpiece is stable during the clamping process, and accurate clamping of the workpiece is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical clamps, in particular to a movable clamp. Background Art

[0002] In the fields of process equipment, fixture manufacturing, precision machinery, experimental equipment and non-standard machinery, when it is necessary to clamp the pipe pile workpiece, the workpiece must be positioned axially and radially at the same time during the clamping process.

[0003] In the prior art, when a clamp is used, due to the large clamping force of the clamp, the forces on the workpieces in different directions are uneven during the clamping process, resulting in positional changes and unstable radial positioning of the workpieces. Utility Model Content

[0004] The embodiment of the utility model provides a movable clamp to solve the technical problem of unstable radial positioning of a workpiece during the clamping process of the movable clamp in the related art.

[0005] The present invention provides a movable clamp, comprising:

[0006] Base;

[0007] Two clamping assemblies, the two clamping assemblies are arranged on the base at intervals, and the two clamping assemblies are used to clamp the workpiece;

[0008] A radial positioning assembly is provided on the base and located between the two clamping assemblies, and is used for initially radially positioning the workpiece before the two clamping assemblies clamp the workpiece.

[0009] In some embodiments, the radial positioning assembly includes:

[0010] A slide rail, the slide rail is arranged on the base and located between the two clamping assemblies;

[0011] Two positioning hoops arranged opposite to each other, the bottoms of the two positioning hoops being slidably connected to the slide rail;

[0012] A driving component is connected to the two positioning hoops, and is used to drive the two positioning hoops to slide relatively along the slide rail to clamp the workpiece.

[0013] In some embodiments, the driving component includes:

[0014] Two bearing seats, the two bearing seats are arranged at two ends of the slide rail;

[0015] A bidirectional T-shaped screw rod, both ends of which are connected to the two bearing seats, and the bidirectional T-shaped screw rod is rotatably connected to the two positioning hoops;

[0016] A speed changer, wherein the output shaft of the speed changer is connected to the bidirectional T-type lead screw;

[0017] A hand wheel connected to the input shaft of the transmission;

[0018] The hand wheel is rotated, and the speed changer drives the bidirectional T-type screw rod to drive the two positioning hoops to slide relatively along the slide rail to clamp the workpiece.

[0019] In some embodiments, the driving component further comprises:

[0020] A motor is connected to an input shaft of the speed changer.

[0021] In some embodiments, the radial positioning assembly further comprises:

[0022] A cushion block is arranged between the top ends of the two positioning hoops.

[0023] In some embodiments, the base comprises:

[0024] Base plate;

[0025] Three elevated seats, the three elevated seats are spaced apart on the base plate, the bottoms of the three elevated seats are slidably connected to the base plate, the elevated seat in the middle is connected to the radial positioning assembly, and the two elevated seats on both sides are respectively connected to the two clamping assemblies.

[0026] In some embodiments, each of the clamping assemblies comprises:

[0027] A fixing seat, the fixing seat is arranged on the base;

[0028] An upper cover is arranged opposite to the fixing seat, one end of the upper cover is rotatably connected to the fixing seat, and the upper cover and the fixing seat are closed to clamp the workpiece.

[0029] In some embodiments, the clamping assembly further comprises:

[0030] A locking component is arranged on one end of the upper cover away from the rotational connection between the upper cover and the fixing base, and the locking component is detachably connected to the fixing base.

[0031] In some embodiments, it also includes:

[0032] A plurality of protection pads are arranged at intervals on the inner sides of the fixing seat and the upper cover.

[0033] In some embodiments, it also includes:

[0034] A connecting block, the connecting block is arranged outside the two clamping assemblies, and the bottom of the connecting block is connected to the base;

[0035] A positioning block is slidably connected to the connecting block, and a support surface adapted to the workpiece is provided above the positioning block.

[0036] The beneficial effects brought by the technical solution provided by the utility model include:

[0037] The embodiment of the utility model provides a movable clamp, the movable clamp includes a base, two clamping assemblies and a radial positioning assembly, the two clamping assemblies are arranged on the base at intervals, the two clamping assemblies are used to clamp a workpiece, the radial positioning assembly is arranged on the base and located between the two clamping assemblies, and the radial positioning assembly is used to initially radially position the workpiece before the two clamping assemblies clamp the workpiece. The utility model performs initial radial positioning of the workpiece through the radial positioning assembly, and performs initial radial positioning before the two clamping assemblies clamp the workpiece, so that the radial positioning of the workpiece is stable during the clamping process, and accurate clamping of the workpiece is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 A schematic diagram of a movable clamp provided in an embodiment of the utility model;

[0040] Figure 2 A schematic diagram of a base provided in an embodiment of the utility model;

[0041] Figure 3 A schematic diagram of a radial positioning assembly provided by an embodiment of the utility model;

[0042] Figure 4 A schematic diagram of a clamping assembly provided by an embodiment of the utility model;

[0043] Figure 5 Another schematic diagram of a clamping assembly provided by an embodiment of the utility model;

[0044] Reference numerals:

[0045] 1. Base; 11. Bottom plate; 12. Heightening seat;

[0046] 2. Clamping assembly; 21. Fixing seat; 22. Upper cover; 23. Locking component; 231. Second pin shaft; 232. Stud; 233. Butterfly nut; 24. First pin shaft;

[0047] 3. Radial positioning assembly; 31. Slide rail; 32. Positioning hoop; 33. Driving component; 331. Bearing seat; 332. Bidirectional T-type screw rod; 333. Speed ​​changer; 334. Hand wheel; 34. Spacer;

[0048] 4. Workpiece;

[0049] 5. Protective pad;

[0050] 6. Connecting block;

[0051] 7. Positioning block; 71. Backing surface. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0053] The embodiment of the utility model provides a movable clamp, which can solve the technical problem of unstable radial positioning of a workpiece during the clamping process of the movable clamp in the prior art.

[0054] See also Figure 1 As shown, an embodiment of the utility model provides a movable clamp, which is provided with a base 1, a clamping assembly 2 and a radial positioning assembly 3.

[0055] The two clamping assemblies 2 are arranged on the base 1 at intervals, and the two clamping assemblies 2 are used to clamp the workpiece 4. The radial positioning assembly 3 is arranged on the base 1 and located between the two clamping assemblies 2, and the radial positioning assembly 3 is used to initially radially position the workpiece 4 before the two clamping assemblies 2 clamp the workpiece 4. The radial positioning assembly of the utility model performs initial radial positioning on the workpiece before the clamping assembly clamps the workpiece, controls the deflection of the workpiece, reduces the position change caused by the large clamping force and the uneven force on the workpiece during the clamping process, and keeps the radial position of the workpiece accurate during the clamping process.

[0056] The embodiment of the utility model provides a movable clamp, which is provided with a base, a clamping assembly and a radial positioning assembly, wherein the clamping assembly is used to clamp a workpiece, and the radial positioning assembly is used to initially position the workpiece radially before the clamping assembly clamps the workpiece. The radial positioning assembly of the utility model performs initial radial positioning on the workpiece before the clamping assembly clamps the workpiece, controls the deflection of the workpiece, reduces the position change caused by the large clamping force and the uneven force on the workpiece during the clamping process, and keeps the radial position of the workpiece accurate during the clamping process.

[0057] As an optional implementation, in a utility model embodiment, see Figure 1 and Figure 3 As shown, the radial positioning assembly 3 is provided with a slide rail 31, two positioning hoops 32 arranged oppositely, and a driving component 33. The slide rail 31 is arranged on the base 1 and between the two clamping assemblies 2. The slide rail 31 is arranged along the radial direction of the workpiece 4. The bottoms of the two positioning hoops 32 are both slidably connected with the slide rail 31. When the two oppositely arranged positioning hoops 32 move inward, they contact and clamp the workpiece 4. When the two positioning hoops 32 move outward, the workpiece 4 is released. The driving component 33 is connected with the two positioning hoops 32. The driving component 33 is used to drive the two positioning hoops 32 to slide relatively along the slide rail 31 to clamp the workpiece 4. The clamping speed of the positioning hoop is controlled by the driving component, and a suitable clamping force is provided to improve the accuracy of the workpiece position during positioning.

[0058] As an optional implementation, in a utility model embodiment, see Figure 3As shown, the driving component 33 is provided with two bearing seats 331, a bidirectional T-type screw rod 332, a speed changer 333 and a hand wheel 334. The slide rails 31 are two linear guide rails installed in parallel on the base 1, and are arranged along the radial direction of the workpiece 4. The bidirectional T-type screw rod 332 is installed on the base 1 through two bearing seats 331 and is located in the groove between the two slide rails 31. The left-handed screw rod of the bidirectional T-type screw rod 332 has half of the threaded part at the screw rod being left-handed and half being right-handed. When rotating in one direction, the two positioning hoops 32 are driven to separate or move together at both ends. When rotating in the opposite direction, the two positioning hoops 32 are driven to move together or separate at both ends. The bidirectional T-type screw rod 332 and the speed changer 334 are connected. The output shaft of the speed changer 333 is connected, the input shaft of the speed changer 333 is connected to the hand wheel 334, and the hand wheel 334 is turned. Through the speed change transmission of the speed changer 333, the bidirectional T-type screw rod 332 is rotated at a certain speed. The bidirectional T-type screw rod 332 is a left-right rotation combined structure. During the rotation of the bidirectional T-type screw rod 332, the two positioning hoops 32 can be driven to open or close relatively to clamp the workpiece 4. Through the speed change of the speed changer 333 and the pitch of the bidirectional T-type screw rod 332, the clamping and loosening speed of the radial positioning assembly 3 can be set to a reasonable speed. At the same time, the bidirectional T-type screw rod 332 has a self-locking effect, which can lock the radial positioning assembly 3 when the workpiece 4 is radially positioned. Through the design of the speed changer and the left-right rotation combined bidirectional T-type screw rod, the workpiece is locked without deflection during the clamping process, and the radial positioning assembly has a suitable and stable opening or clamping speed, so as to achieve accurate clamping of the workpiece and improve the stability of radial positioning.

[0059] As an optional implementation, in a utility model embodiment, see Figure 3 As shown, the driving component 33 is also provided with a motor, which is connected to the input shaft of the speed changer 333. The motor can replace the hand wheel 334, and change the way the hand wheel 334 inputs torque to a motor-driven form to achieve automatic radial clamping.

[0060] As an optional implementation, in a utility model embodiment, see Figure 1 and Figure 3 As shown, the radial positioning assembly 3 is further provided with a cushion block 34, which is arranged between the top ends of the two positioning hoops 32. The cushion block 34 is installed between the ends of the two positioning hoops 32 and can slide along the groove between the ends of the two positioning hoops 32, further improving the stability of the radial positioning assembly for radial positioning of the workpiece.

[0061] As an optional implementation, in a utility model embodiment, see Figure 2As shown, the base 1 is provided with a bottom plate 11 and three elevated seats 12, the three elevated seats 12 are arranged at intervals on the bottom plate 11, the bottoms of the three elevated seats 12 are slidably connected to the bottom plate 11, the elevated seat 12 arranged in the middle is connected to the radial positioning component 3, and the two elevated seats 12 arranged on both sides are respectively connected to the two clamping components 2. Each elevated seat 12 can slide along the bottom plate 11 at will, so that the radial positioning component 3 can radially position the workpiece 4 at different positions, and the clamping component 2 can clamp the workpiece 4 at any position on the bottom plate 11. The waist round hole of each elevated seat 12 and the array hole design of the bottom plate 11 enable the fixture to adapt to different structural forms or sizes of workpieces, and has strong versatility.

[0062] As an optional implementation, in a utility model embodiment, see Figure 4 and Figure 5 As shown, each of the clamping components 2 is provided with a fixed seat 21 and an upper cover 22 arranged opposite to the fixed seat 21, the fixed seat 21 is arranged on the base 1, one end of the upper cover 22 is rotatably connected to the fixed seat 21 through a first pin shaft 24, and a corresponding inclined surface is arranged at the connection between the fixed seat 21 and the upper cover 22. When the upper cover 22 is opened, the upper cover 22 rotates relative to the fixed seat 21. When the upper cover 22 moves to the inclined surfaces fit each other, it is in a loosened state. The inclined surface can make the upper cover 22 open at an angle greater than 90 degrees and balanced. When the upper cover 22 and the fixed seat 21 are closed, the workpiece 4 is clamped. The clamping component has a simple structure and is convenient for clamping and loosening the workpiece.

[0063] As an optional implementation, in a utility model embodiment, see Figure 4 and Figure 5 As shown, the clamping assembly 2 is also provided with a locking component 23, and the locking component 23 is arranged on one end of the upper cover 22 away from the rotational connection between the upper cover 22 and the fixing seat 21, and the locking component 23 is detachably connected to the fixing seat 21, and the locking component 23 includes a second pin shaft 231, a stud 232 and a butterfly nut 233, and the second pin shaft 231 is installed on the fixing seat 21 through the stud 232, and the stud 232 can rotate around the second pin shaft 231, and a butterfly nut 233 is installed on the stud 232, and the clamping assembly can be tightened or loosened by tightening or loosening the butterfly nut 233.

[0064] As an optional implementation, in a utility model embodiment, see Figure 4 and Figure 5As shown, a plurality of protective pads 5 are provided, and the plurality of protective pads 5 are arranged at intervals on the inner sides of the fixing seat 21 and the upper cover 22. By changing the thickness of the protective pads 5, the clamping assembly 2 can clamp workpieces 4 of different diameters. The clamping assembly 2 can be one or more, and the protective pads can make the clamp adapt to different structural forms or sizes of workpieces, and the clamp has strong versatility.

[0065] As an optional implementation, in a utility model embodiment, see Figure 1 As shown, a connecting block 6 and a positioning block 7 are also provided. The connecting block 6 is provided on the outside of the two clamping assemblies 2. The bottom of the connecting block 6 is connected to the base 1. The positioning block 7 has a waist-shaped hole. The positioning block 7 can slide along the connecting block 6. By changing the position, the axial positioning position of the workpiece can be adjusted. The positioning block 7 has a support surface 71. The shape of the support surface 71 is adapted to the shape of the workpiece 4 to provide axial positioning for the workpiece. The connecting block and the positioning block have a simple structure, which is convenient for preliminary adjustment and fixing of the axial position of the workpiece.

[0066] In the description of the present utility model, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0067] It should be noted that, in the present utility model, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0068] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A movable clamp, characterized in that: include: Base (1); Two clamping assemblies (2), the two clamping assemblies (2) being arranged on the base (1) at intervals, and the two clamping assemblies (2) being used to clamp a workpiece (4); A radial positioning component (3) is arranged on the base (1) and located between the two clamping components (2), and the radial positioning component (3) is used for initially radially positioning the workpiece (4) before the two clamping components (2) clamp the workpiece (4).

2. A movable clamp according to claim 1, characterized in that: The radial positioning assembly (3) comprises: A slide rail (31), the slide rail (31) being arranged on the base (1) and located between the two clamping assemblies (2); Two positioning hoops (32) arranged opposite to each other, the bottoms of the two positioning hoops (32) being slidably connected to the slide rail (31); A driving component (33) is connected to the two positioning hoops (32), and the driving component (33) is used to drive the two positioning hoops (32) to slide relatively along the slide rail (31) to clamp the workpiece (4).

3. A movable clamp according to claim 2, characterized in that: The driving component (33) comprises: Two bearing seats (331), the two bearing seats (331) being arranged at two ends of the slide rail (31); A bidirectional T-shaped screw rod (332), wherein both ends of the bidirectional T-shaped screw rod (332) are connected to the two bearing seats (331), and the bidirectional T-shaped screw rod (332) is rotatably connected to the two positioning hoops (32); A speed changer (333), wherein an output shaft of the speed changer (333) is connected to the bidirectional T-shaped screw rod (332); A hand wheel (334), the hand wheel (334) being connected to an input shaft of the transmission (333); The hand wheel (334) is rotated, and the speed changer (333) drives the bidirectional T-shaped screw rod (332) to drive the two positioning hoops (32) to slide relatively along the slide rail (31) to clamp the workpiece (4).

4. A movable clamp according to claim 3, characterized in that: The driving component (33) further comprises: A motor is connected to an input shaft of the speed changer (333).

5. The movable clamp according to claim 3, characterized in that: The radial positioning assembly (3) further comprises: A cushion block (34) is arranged between the top ends of the two positioning hoops (32).

6. The movable clamp according to claim 1, characterized in that: The base (1) comprises: Bottom plate (11); Three elevated seats (12), the three elevated seats (12) are arranged on the base plate (11) at intervals, the bottoms of the three elevated seats (12) are slidably connected to the base plate (11), the elevated seat (12) arranged in the middle is connected to the radial positioning assembly (3), and the two elevated seats (12) arranged on both sides are respectively connected to the two clamping assemblies (2).

7. The movable clamp according to claim 1, characterized in that: Each of the clamping assemblies (2) comprises: A fixing seat (21), wherein the fixing seat (21) is arranged on the base (1); An upper cover (22) is arranged opposite to the fixing seat (21), one end of the upper cover (22) is rotatably connected to the fixing seat (21), and the upper cover (22) and the fixing seat (21) clamp the workpiece (4) when they are closed.

8. The movable clamp according to claim 7, characterized in that: The clamping assembly (2) further comprises: A locking component (23), wherein the locking component (23) is arranged on one end of the upper cover (22) away from the rotational connection between the upper cover (22) and the fixing seat (21), and the locking component (23) and the fixing seat (21) are detachably connected.

9. The movable clamp according to claim 7, characterized in that: Also includes: A plurality of protective pads (5), wherein the plurality of protective pads (5) are arranged at intervals on the inner sides of the fixing seat (21) and the upper cover (22).

10. The movable clamp according to claim 1, characterized in that: Also includes: A connecting block (6), the connecting block (6) being arranged on the outside of the two clamping assemblies (2), the bottom of the connecting block (6) being connected to the base (1); A positioning block (7), wherein the positioning block (7) is slidably connected to the connecting block (6), and a support surface (71) adapted to the workpiece (4) is provided above the positioning block (7).

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