Positioning clamp for part machining

Abstract

The utility model relates to the technical field of clamps, and discloses a positioning clamp for part machining, which comprises a base, two mounting seats are symmetrically welded on the upper surface of the base, the surfaces of the two mounting seats are rotatably connected with clamping cylinders through bearings, and positioning cavities for placing external workpieces are reserved in the two clamping cylinders. The clamping cylinder is provided with a clamping assembly corresponding to the positioning cavity, and a side swing assembly is arranged between the mounting base and the clamping cylinder. A part is inserted into the positioning cavity along with the clamping cylinder, the hydraulic rod is controlled to extend to drive the positioning clamping plate to move downwards to clamp and position the part, after the part is preliminarily machined, the side swing assembly is arranged, the servo motor is used for driving the worm to rotate, the clamping cylinder can be driven to swing on the basis that the worm is meshed with the ring worm wheel, and therefore the part can be clamped and positioned. The purpose of adjusting the angle of the part is achieved, different machining requirements are met, in the process, secondary clamping of the part is not needed, operation is convenient, and machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, and more specifically to a positioning clamp for parts processing. Background Art

[0002] A fixture is a device used to fix the object to be processed during the mechanical manufacturing process so that it occupies the correct position for construction or inspection.

[0003] After searching, the existing patent (publication number: CN217890246U) discloses a positioning fixture for precision parts processing. During use, the second threaded rod is rotated to drive the second threaded sleeve to move forward and backward on the surface of the second threaded rod, and the forward and backward movement of the second threaded sleeve drives the forward and backward movement of the slider, and the forward and backward movement of the slider drives the forward and backward movement of the fixed block, and the forward and backward movement of the fixed block drives the forward and backward movement of the rotating shaft, and the forward and backward movement of the rotating shaft drives the forward and backward movement of the rotating pin, so that the parts are clamped by two rotating pins. However, the inventor found that the prior art has the following problems in the process of realizing the utility model: the above-mentioned positioning fixture, after the parts are clamped and positioned for processing, when the side of the parts needs to be processed synchronously, the parts need to be disassembled, and then the angle is adjusted and the clamping operation is performed again, and then the processing is performed again. In this process, it has the defects of cumbersome operation and low efficiency. In view of this, the utility model proposes a positioning fixture for parts processing that is convenient for adjusting the processing angle. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a positioning fixture for parts processing to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a positioning fixture for parts processing, comprising a base, two mounting seats are symmetrically welded on the upper surface of the base, the surfaces of the two mounting seats are rotatably connected with clamping cylinders through bearings, the insides of the two clamping cylinders are reserved with positioning cavities for external workpieces to be placed, the clamping cylinders are provided with clamping components corresponding to the positioning cavities, and a side swing component is provided between the mounting seats and the clamping cylinders;

[0006] The clamping assembly includes a hydraulic rod embedded in the top side of the clamping tube, the telescopic end of the hydraulic rod extends into the interior of the positioning cavity and is fixedly mounted with a positioning clamping plate, and the bottom end of the positioning clamping plate is provided with anti-slip grooves;

[0007] The side swing assembly includes a servo motor fixedly mounted on the top of a mounting seat, a transmission cavity is opened on the inner wall of the mounting seat, the output shaft of the servo motor extends into the interior of the transmission cavity and is fixedly mounted with a worm, a ring worm wheel is fixedly mounted on the surface of the clamping cylinder inside the transmission cavity, and the worm is meshed with the ring worm wheel.

[0008] Furthermore, a synchronous connection column is fixedly installed between the two clamping cylinders; by providing the synchronous connection column, the two clamping cylinders can be connected so that the two clamping cylinders can rotate synchronously.

[0009] Furthermore, a limiting slide bar is fixedly installed on the top of the positioning clamp, and the limiting slide bar is slidably connected to the surface of the clamping tube; by setting the limiting slide bar, the moving trajectory of the positioning clamp can be limited, and the purpose of anti-twisting protection of the telescopic end of the hydraulic rod can be achieved.

[0010] Furthermore, the clamping assembly also includes a limiting groove provided on the bottom wall of the clamping cylinder, the interior of the limiting groove is rotatably connected with a positive and negative threaded screw, a hand-cranked wheel is fixedly installed on the front end of the positive and negative threaded screw, and the surfaces of the positive and negative threaded screws are symmetrically threadedly connected with two movable screw blocks, the movable screw blocks are slidably connected to the limiting groove, and side clamps are fixedly installed on the surfaces of the two movable screw blocks; by providing the positive and negative threaded screws and rotating the positive and negative threaded screws with the hand-cranked wheel, the two movable screw blocks can be driven to move synchronously, and by using the side clamps to approach each other, the parts can be limited to the center position of the clamping cylinder, which provides convenience for subsequent processing of the parts.

[0011] Furthermore, a pull-out groove is provided on the surface of the base, a slag collecting pan is provided on the surface of the pull-out groove between the two clamping tubes, and a handle is welded on the surface of the slag collecting pan; by providing the slag collecting pan, it is convenient to collect the slag generated by parts processing.

[0012] Furthermore, the surface of the clamping cylinder is provided with angle scale lines in a ring shape, and the surface of the mounting seat is provided with arrows, and the arrows correspond to the positions of the angle scale lines; by providing the angle scale lines and arrows, it is convenient to accurately mark the swinging angle of the clamping cylinder, thereby meeting the subsequent requirements for precise adjustment of the processing angle of the parts.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model inserts the parts into the positioning cavity in the direction of the two clamping cylinders, and controls the extension of the hydraulic rod to drive the positioning clamp plate to move down to clamp and position the parts. After the parts are preliminarily processed, a side swing assembly is set and a servo motor is used to drive the worm to rotate. Based on the meshing of the worm and the ring worm gear, the clamping cylinder can be driven to swing, thereby adjusting the angle of the parts to meet different processing requirements. In this process, there is no need to clamp the parts for the second time, which is easy to operate and improves the processing efficiency.

[0015] 2. The utility model can connect the two clamping cylinders by setting a synchronous connecting column, so that the two clamping cylinders can rotate synchronously; by setting a limiting slide bar, the moving trajectory of the positioning clamping plate can be limited, and the telescopic end of the hydraulic rod can be protected from torsion; by setting positive and negative threaded screws and rotating the positive and negative threaded screws with a hand-cranked wheel, the two moving screw blocks can be driven to move synchronously, and by using the side clamps to approach each other, the parts can be limited in the center position of the clamping cylinder, which provides convenience for subsequent processing of the parts; by setting a slag collecting tray, it is convenient to collect the debris generated by the processing of the parts; by setting angle scales and arrows, it is convenient to accurately mark the swing angle of the clamping cylinder, thereby meeting the needs of subsequent precise adjustment of the processing angle of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the utility model from perspective 1;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from the second viewing angle;

[0018] Figure 3 It is a schematic diagram of the side section structure of the mounting seat of the utility model.

[0019] The accompanying drawings are marked as follows: 1. base; 2. mounting seat; 3. clamping cylinder; 4. hydraulic rod; 5. positioning splint; 6. servo motor; 7. worm; 8. worm gear; 9. synchronous connecting column; 10. limiting slide rod; 11. positive and negative thread screw; 12. hand wheel; 13. moving screw block; 14. side splint; 15. slag collecting plate; 16. handle; 17. angle scale line; 18. arrow. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The positioning fixture for parts processing involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0021] Reference Figure 1-3 The utility model provides a positioning fixture for parts processing, including a base 1, two mounting seats 2 are symmetrically welded on the upper surface of the base 1, the surfaces of the two mounting seats 2 are rotatably connected with clamping cylinders 3 through bearings, and a synchronous connecting column 9 is fixedly installed between the two clamping cylinders 3. By setting the synchronous connecting column 9, the two clamping cylinders 3 can be connected so that the two clamping cylinders 3 can rotate synchronously.

[0022] The two clamping cylinders 3 are both provided with positioning cavities for placing external workpieces. The clamping cylinders 3 are provided with clamping assemblies corresponding to the positioning cavities, and a side swing assembly is provided between the mounting seat 2 and the clamping cylinders 3 .

[0023] The clamping assembly includes a hydraulic rod 4 embedded in the top side of the clamping tube 3. The telescopic end of the hydraulic rod 4 extends to the interior of the positioning cavity and is fixedly mounted with a positioning clamping plate 5. The bottom end of the positioning clamping plate 5 is provided with anti-slip grooves.

[0024] When using the utility model, the overall positioning fixture is connected to the external power control system in advance. When clamping the part, the part is inserted into the positioning cavity in the direction of the two clamping tubes 3, and the positioning clamp 5 is driven downward by controlling the extension of the hydraulic rod 4 to clamp and position the part.

[0025] The clamping assembly also includes a limiting groove opened on the inner bottom wall of the clamping cylinder 3, and the inside of the limiting groove is rotatably connected with a forward and reverse threaded screw 11, and a hand-cranked wheel 12 is fixedly installed on the front end of the forward and reverse threaded screw 11. The surface of the forward and reverse threaded screw 11 is symmetrically threadedly connected with two movable screw blocks 13, and the movable screw blocks 13 are slidably connected to the limiting groove, and side clamps 14 are fixedly installed on the surfaces of the two movable screw blocks 13.

[0026] When clamping parts, corresponding to parts of different widths, the hand-cranked wheel 12 is used to rotate the positive and negative threaded screws 11, which can drive the two movable screw blocks 13 to move synchronously. The side clamps 14 are brought close to each other, so that the parts can be limited to the center position of the clamping tube 3, providing convenience for subsequent processing of the parts.

[0027] A limiting slide bar 10 is fixedly installed on the top of the positioning clamping plate 5 , and the limiting slide bar 10 is slidably connected to the surface of the clamping tube 3 .

[0028] By providing the limiting slide bar 10 , the moving track of the positioning clamp plate 5 can be limited, and the purpose of anti-twisting protection of the telescopic end of the hydraulic rod 4 can be achieved.

[0029] The side swing assembly includes a servo motor 6 fixedly mounted on the top of the mounting base 2. A transmission cavity is opened on the inner wall of the mounting base 2. The output shaft of the servo motor 6 extends into the interior of the transmission cavity and is fixedly mounted with a worm 7. A ring worm wheel 8 is fixedly mounted on the surface of the clamping cylinder 3 inside the transmission cavity, and the worm 7 is meshed with the ring worm wheel 8.

[0030] By setting up a side swing assembly and utilizing the servo motor 6 to drive the worm 7 to rotate, based on the meshing of the worm 7 and the worm wheel 8, the clamping tube 3 can be driven to swing, thereby achieving the purpose of adjusting the angle of the part to adapt to different processing requirements. In this process, there is no need to perform secondary clamping of the parts, which is convenient to operate and improves the efficiency during processing.

[0031] Of course, due to the limitation of the power supply and pressure of the hydraulic rod 4 and other electrical equipment, the swing of the clamping cylinder 3 is subject to certain angle limitations.

[0032] The surface of the clamping tube 3 is provided with an annular angle scale line 17 , and the surface of the mounting seat 2 is provided with an arrow 18 , and the position of the arrow 18 corresponds to the angle scale line 17 .

[0033] By providing the angle scale lines 17 and the arrows 18, it is convenient to accurately mark the swing angle of the clamping tube 3, thereby meeting the need for subsequent accurate adjustment of the part processing angle.

[0034] A drawing groove is provided on the surface of the base 1 , a slag collecting tray 15 is provided on the surface of the drawing groove between the two clamping tubes 3 , and a handle 16 is welded on the surface of the slag collecting tray 15 .

[0035] By providing the slag collecting tray 15, it is convenient to collect the slag generated by the parts processing, and it is convenient to maintain the cleanliness of the processing environment.

[0036] Finally, it should be noted that the drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention, and other structures may refer to the usual design. In the absence of conflict, the same embodiment and different embodiments of the present invention may be combined with each other.

Claims

1. A positioning fixture for parts processing, comprising a base (1), characterized in that: Two mounting seats (2) are symmetrically welded on the upper surface of the base (1); the surfaces of the two mounting seats (2) are rotatably connected to clamping cylinders (3) via bearings; the interiors of the two clamping cylinders (3) are reserved with positioning cavities for placing external workpieces; the clamping cylinders (3) are provided with clamping assemblies corresponding to the positioning cavities; and a side swing assembly is provided between the mounting seats (2) and the clamping cylinders (3); The clamping assembly comprises a hydraulic rod (4) embedded in the top side of the clamping cylinder (3), the telescopic end of the hydraulic rod (4) extends into the interior of the positioning cavity and is fixedly mounted with a positioning clamping plate (5), and the bottom end of the positioning clamping plate (5) is provided with anti-slip grooves; The side swing assembly comprises a servo motor (6) fixedly mounted on the top of a mounting seat (2); a transmission cavity is formed on the inner wall of the mounting seat (2); an output shaft of the servo motor (6) extends into the interior of the transmission cavity and is fixedly mounted with a worm (7); a ring worm wheel (8) is fixedly mounted on the surface of the clamping cylinder (3) in the interior of the transmission cavity; the worm (7) meshes with the ring worm wheel (8).

2. A positioning fixture for parts processing according to claim 1, characterized in that: A synchronous connecting column (9) is fixedly installed between the two clamping cylinders (3).

3. A positioning fixture for parts processing according to claim 1, characterized in that: A limiting slide bar (10) is fixedly mounted on the top of the positioning clamping plate (5), and the limiting slide bar (10) is slidably connected to the surface of the clamping cylinder (3).

4. A positioning fixture for parts processing according to claim 1, characterized in that: The clamping assembly also includes a limiting groove formed on the inner bottom wall of the clamping cylinder (3), wherein a positive and negative threaded screw (11) is rotatably connected inside the limiting groove, a hand-cranked wheel (12) is fixedly mounted on the front end of the positive and negative threaded screw (11), two movable screw blocks (13) are symmetrically threadedly connected on the surface of the positive and negative threaded screw (11), the movable screw blocks (13) are slidably connected to the limiting groove, and side clamping plates (14) are fixedly mounted on the surfaces of the two movable screw blocks (13).

5. A positioning fixture for parts processing according to claim 1, characterized in that: A drawing groove is provided on the surface of the base (1), a slag collecting plate (15) is provided on the surface of the drawing groove between the two clamping cylinders (3), and a handle (16) is welded on the surface of the slag collecting plate (15).

6. A positioning fixture for parts processing according to claim 1, characterized in that: The surface of the clamping cylinder (3) is provided with an annular angle scale line (17), and the surface of the mounting seat (2) is provided with an arrow (18), and the position of the arrow (18) corresponds to the angle scale line (17).

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