Clamp for metal piece machining

Abstract

The utility model discloses a clamp for metal piece machining, relates to the related field of metal piece machining, and aims to solve the problems that in the prior art, in the mode that a thread is matched with an internal thread of a sliding piece, under the condition that threads of equipment are lost or abraded, accessories are not easy to overhaul and replace, the whole clamp needs to be replaced, and the use cost is high. A driving special-shaped piece is arranged on the other side of the upper end of the C-shaped supporting plate, and the outer surface of the driving special-shaped piece is formed by alternately connecting two arc-shaped loosening faces and two arc-shaped clamping faces; the first fixing seat upper fixing block and the second fixing seat upper fixing block are connected through connecting rods, the connecting rods penetrate through the first fixing seat upper fixing block and the second fixing seat upper fixing block, the connecting rods are slidably connected with the second fixing seat upper fixing block, and the other ends of the two connecting rods are provided with an outer fixing vertical plate. And a pressure spring is arranged between the fixing block on the first fixing seat and the fixing block on the second fixing seat along the outer part of the connecting rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related field of metal piece processing, concretely to a clamp for metal piece processing. BACKGROUND

[0002] With the rapid development of modern industry, metal pieces, as indispensable basic components in many fields such as mechanical manufacturing, aerospace, automobile manufacturing, and electronic communication, directly affect the performance and market competitiveness of the final product in terms of processing precision, efficiency, and quality. Metal piece processing covers a series of complex processes from raw material cutting, forming, heat treatment, surface treatment to precision assembly. In these processes, how to ensure the stability of metal pieces during processing, reduce deformation, and improve processing precision has become a key problem in the field of metal piece processing.

[0003] As a bridge connecting the machine tool and the workpiece, the clamp for metal piece processing directly affects the stability, processing precision, and production efficiency of the processing process. A high-quality clamp can ensure accurate positioning and clamping of the workpiece during processing, reduce processing errors caused by factors such as vibration and deformation, and improve processing efficiency and reduce production costs.

[0004] The currently used method is a threaded drive method, such as the Chinese authorized patent (a milling machine clamp for metal piece processing) with the publication number CN 216264695 U, which includes a top plate, a bottom plate rotatably installed on one side of the top plate, a rectangular slide rail fixedly installed at the top end of the top plate, a clamping plate slidably installed inside the rectangular slide rail, and two clamping plates, a fixed plate fixedly installed at the top end of the rectangular slide rail, a No. 1 bolt threadedly installed inside the fixed plate, and the No. 1 bolt rotatably connected to one side of the clamping plate. In automatic production, the rotation of the threaded rod driven by the motor realizes the sliding clamping operation.

[0005] However, the threaded and sliding piece internal thread cooperation method is not easy to repair and replace parts when the equipment has missing or worn threads, and the entire clamp needs to be replaced, which is high in use cost. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a clamp for metal piece processing to solve the problem of the threaded and sliding piece internal thread cooperation method in the background art, which is not easy to repair and replace parts when the equipment has missing or worn threads, and the entire clamp needs to be replaced, which is high in use cost.

[0007] To achieve the above object, the utility model provides the following technical scheme: A kind of clamp for metal piece processing, including C-shaped support plate, first fixed seat and second fixed seat are fixed on the upper end side of C-shaped support plate, first fixed seat and second fixed seat are same in shape, first fixed seat and second fixed seat are symmetrically arranged, the upper end surface of first fixed seat and second fixed seat is provided with limit sliding groove;

[0008] First fixed seat and second fixed seat are slidably connected with clamping piece, the clamping piece includes upper sliding plate, fixed block and limit sliding block, upper sliding plate is located on the upper end of first fixed seat and second fixed seat, fixed block is integrally connected to the outside of the front and rear ends of upper sliding plate, limit sliding block is integrally connected to the lower end of upper sliding plate and is limited to slide along limit sliding groove;

[0009] The other side of the upper end of the C-shaped support plate is provided with a driving special-shaped part, the outer surface of the driving special-shaped part is alternately connected by two arc-shaped release surfaces and two arc-shaped clamping surfaces, the center of the arc-shaped release surface is the same as the center of rotation of the driving special-shaped part, and the distance between the outer end surface of the arc-shaped clamping surface and the center of rotation of the driving special-shaped part increases with the rotation direction.

[0010] The fixed block on the first fixed seat and the fixed block on the second fixed seat are connected by a connecting rod, one end of the connecting rod is provided with a cap, the connecting rod passes through the fixed block on the first fixed seat and the fixed block on the second fixed seat, the connecting rod is slidably connected with the fixed block on the second fixed seat, the other end of the two connecting rods is provided with an outer fixed vertical plate, the outer surface of the driving special-shaped part is in contact with the inner surface of the outer fixed vertical plate and the outer surface of the clamping piece on the upper end of the second fixed seat, and a compression spring is arranged between the fixed block on the first fixed seat and the fixed block on the second fixed seat along the outside of the connecting rod.

[0011] Preferably, a support assembly is arranged between the first fixed seat and the second fixed seat on the C-shaped support plate, the support assembly includes a rotating drive shaft, the rotating drive shaft is connected with the C-shaped support plate and is rotatably connected through a bearing, a spiral drive member is fixed on the upper end portion of the C-shaped support plate outside the rotating drive shaft, a sliding sleeve is arranged on the upper end of the rotating drive shaft and the spiral drive member, a spiral groove matched with the cross section of the spiral drive member is formed in the sliding sleeve, an upper support platform is fixed on the upper end of the sliding sleeve, and a lower limit vertical rod is fixed on the front and rear ends of the sliding sleeve along the lower end of the upper support platform and extends downward through the C-shaped support plate.

[0012] Preferably, a driving motor is installed at the lower end of the C-shaped support plate, and a first bevel gear and a second bevel gear are installed on the outer end of the output shaft of the driving motor.

[0013] Preferably, the lower end of the rotating drive shaft is connected with a fourth bevel gear through the C-shaped support plate, the fourth bevel gear is engaged with the first bevel gear, the shaft of the lower end of the drive special-shaped part is connected with a third bevel gear through the C-shaped support plate, and the third bevel gear is engaged with the second bevel gear.

[0014] Preferably, the inner side of the upper end of the upper sliding plate is fixed with a connecting plate through a screw, and the inner side of the connecting plate is welded with a clamping plate arranged vertically.

[0015] Preferably, one end of the connecting rod close to the outer fixed vertical plate is fixed with a threaded column, the outer side of the threaded column is threadedly connected with a fixed nut, and the threaded column is threadedly connected with the fixed nut through the outer fixed vertical plate.

[0016] Preferably, the lower end of the C-shaped support plate is welded with a mounting horizontal plate, mounting holes are formed at the four corners of the mounting horizontal plate, and a rectangular hollow slot is formed through the mounting horizontal plate.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. In the utility model, the clamping process is realized by the contact between the two arc-shaped release surfaces of the drive special-shaped part and the outer side surface of the clamping part and the inner side surface of the outer fixed vertical plate or the contact between the two arc-shaped clamping surfaces of the drive special-shaped part and the outer side surface of the clamping part and the inner side surface of the outer fixed vertical plate, the center of the arc-shaped release surface is the same as the rotating center of the drive special-shaped part, the distance between the outer end surface of the arc-shaped clamping surface and the rotating center of the drive special-shaped part increases along the rotating direction, and the clamping and release are converted by rotating. The operation time of the clamping and release process is short, and the overall machining efficiency is improved.

[0019] 2. In the utility model, the clamping process is realized by the shape of the drive special-shaped part and the pressure spring, the sliding structure is not directly fixed with the pressure spring, the pressure spring can be disassembled, and the pressure spring can be replaced when the elastic performance of the pressure spring decreases, instead of replacing the whole clamp, the problem that the threaded cooperation mode between the thread and the sliding part is not easy to maintain and replace the parts when the thread is missing or worn, and the whole clamp needs to be replaced, and the use cost is high is solved.

[0020] 3. In the utility model, before clamping, the metal part to be machined can be placed on the upper end of the upper support platform, and the metal part does not need to be positioned by other structures or manual assistance during the clamping process. During the clamping process, under the action of the same driving structure, i.e. the driving motor, the rotating drive shaft rotates, the sliding sleeve moves downward, the upper support platform moves downward and moves away from the metal part, so that the side clamping is facilitated. No new driving structure is introduced, but the support function is increased, which is more conducive to improving the machining efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole structure schematic view of the main view angle of the clamp for metal piece machining;

[0022] Figure 2 It is a whole structure schematic view of the lower end view angle of the clamp for metal piece machining;

[0023] Figure 3 It is a plan view of the clamp for metal piece machining;

[0024] Figure 4 It is a front view of the clamp for metal piece machining;

[0025] Figure 5 It is a side view of the clamp for metal piece machining;

[0026] Figure 6 It is a structure schematic view of the supporting assembly of the clamp for metal piece machining.

[0027] In the figure: 1, installation horizontal plate; 2, C-shaped supporting plate; 3, first fixed seat; 4, second fixed seat; 5, limiting sliding groove; 6, clamping part; 7, upper sliding plate; 8, fixed block; 9, limiting sliding block; 10, clamping plate; 11, connecting plate; 12, driving motor; 13, first bevel gear; 14, second bevel gear; 15, third bevel gear; 16, driving special-shaped part; 17, arc-shaped loosening surface; 18, arc-shaped clamping surface; 19, connecting rod; 20, threaded column; 21, outer fixed vertical plate; 22, fixed nut; 23, pressure spring; 24, fourth bevel gear; 25, supporting assembly; 26, rotating driving shaft; 27, screw driving part; 28, sliding sleeve; 29, upper supporting platform; 30, lower limiting vertical rod; 31, rectangular hollow groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0029] Please refer to Figures 1-6 The utility model provides an embodiment:

[0030] 1. Clamp main body structure

[0031] Installation horizontal plate 1: as the basic support of whole clamp, installation hole is set up in four corner positions, is convenient for fixed on processing equipment. The rectangular hollow groove 31 that is set up inside penetrates to reduce weight, simultaneously does not affect structural strength.

[0032] C-shaped support plate 2: welded and fixed on the installation horizontal plate 1, which is the main load-bearing component of the clamp, and has a first fixed seat 3 and a second fixed seat 4 fixed on the upper end of one side, which are symmetrically arranged to ensure the balance of clamping force.

[0033] First fixed seat 3 and second fixed seat 4: same shape, upper end face is provided with a limiting sliding groove 5 for guiding the sliding of the clamping part 6.

[0034] Clamping part 6 (including upper sliding plate 7, fixed block 8, limiting sliding block 9): upper sliding plate 7 is located on the upper end of the first fixed seat 3 and the second fixed seat 4, fixed block 8 is integrally connected to the outer side of the front and rear ends of the upper sliding plate 7, limiting sliding block 9 is integrally connected to the lower end of the upper sliding plate 7 and slides along the limiting sliding groove 5; by sliding the limiting sliding block 9 in the limiting sliding groove 5, the horizontal movement is realized. The inner side of the upper end of the upper sliding plate 7 is fixed with a connecting plate 11 by screws, the inner side of the connecting plate 11 is welded with a clamping plate 10, the clamping plate 10 is vertically arranged, which is used for directly clamping metal parts.

[0035] Driving special-shaped part 16: the outer surface is designed as two arc-shaped release surfaces 17 and two arc-shaped clamping surfaces 18 connected alternately, the center of the arc-shaped release surface 17 is the same as the center of rotation of the driving special-shaped part 16, the distance between the outer end surface of the arc-shaped clamping surface 18 and the upper rotating center of the driving special-shaped part 16 increases with the rotation direction, and the conversion between clamping and releasing is realized by rotation. The design of the arc-shaped clamping surface 18 makes the clamping force gradually increase with the increase of the rotation angle, which ensures the clamping effect. The driving special-shaped part 16 and the driving shaft at its lower end are locked by a detachable way of thread rod and nut or other detachable way, which is convenient for replacement.

[0036] Connecting rod 19 and pressure spring 23: the fixed blocks 8 on the first fixed seat 3 and the second fixed seat 4 are connected by the connecting rod 19, one end of the connecting rod 19 is provided with a cap, the other end of the two connecting rods 19 is provided with an outer fixed vertical plate 21, the outer surface of the driving special-shaped part 16 is in contact with the inner side surface of the outer fixed vertical plate 21 and the outer side surface of the clamping part 6 on the upper end of the second fixed seat 4, the connecting rod 19 passes through the fixed blocks 8 on the first fixed seat 3 and the second fixed seat 4, connecting the two clamping parts 6 and the outer fixed vertical plate 21 together, and the connecting rod 19 is slidingly connected with the fixed block 8 on the second fixed seat 4. The pressure spring 23 is arranged between the fixed blocks 8 on the first fixed seat 3 and the second fixed seat 4 along the outside of the connecting rod 19. After processing, when the metal part needs to be replaced, the driving special-shaped part 16 is rotated, the two arc-shaped release surfaces 17 of the driving special-shaped part 16 are respectively in contact with the outer side surface of the clamping part 6 at the middle position and the inner side surface of the outer fixed vertical plate 21, and the pressure spring 23 will drive each structure to reset.

[0037] Threaded column 20 and fixed nut 22: used to fix the outer fixed vertical plate 21, when the elastic performance of the pressure spring 23 decreases, turn the fixed nut 22 outward, then the outer fixed vertical plate 21 can be removed, the upper end clamping piece 6 of the second fixed seat 4 is removed, and the replacement can be carried out normally.

[0038] 2. Lifting mechanism

[0039] Support assembly 25: located between the first fixed seat 3 and the second fixed seat 4 on the C-shaped support plate 2, including a rotating drive shaft 26, a screw drive 27, a sliding sleeve 28, and an upper support platform 29. The rotating drive shaft 26 is rotatably connected to the C-shaped support plate 2 through a bearing, the screw drive 27 is fixed outside the rotating drive shaft 26, and matches the screw groove inside the sliding sleeve 28 to realize the lifting function. The upper support platform 29 is fixed at the upper end of the sliding sleeve 28 and used to place the metal parts to be processed.

[0040] The lower end of the upper support platform 29 is fixed with a lower limit vertical rod 30 along the front and rear ends of the sliding sleeve 28, the lower limit vertical rod 30 extends downward through the C-shaped support plate 2 to play a limiting role.

[0041] 3. Drive mechanism

[0042] Drive motor 12: installed at the lower end of the C-shaped support plate 2, the output shaft end of the drive motor 12 is externally provided with a first bevel gear 13 and a second bevel gear 14, the lower end of the rotating drive shaft 26 is connected with a fourth bevel gear 24 through the C-shaped support plate 2, the fourth bevel gear 24 is engaged with the first bevel gear 13, the shaft at the lower end of the drive special-shaped part 16 is connected with a third bevel gear 15 through the C-shaped support plate 2, the third bevel gear 15 is engaged with the second bevel gear 14; through the transmission of the first bevel gear 13, the second bevel gear 14, the third bevel gear 15, and the fourth bevel gear 24, the movement of the clamping mechanism and the lifting mechanism is controlled respectively.

[0043] The initial state is shown in the figure, the upper support platform 29 on the support assembly 25 is higher than the upper end surface of the first fixed seat 3 and the second fixed seat 4, the two arc-shaped release surfaces 17 of the drive special-shaped part 16 are respectively in contact with the outer side surface of the upper clamping piece 6 in the middle position and the inner side surface of the outer fixed vertical plate 21, and the pressure spring 23 is in a relaxed state.

[0044] The metal piece to be processed is placed on the upper end of the supporting platform 29, the driving motor 12 drives the output shaft to rotate, the third bevel gear 15 rotates through the meshing connection relationship with the second bevel gear 14, thereby driving the special-shaped piece 16 to rotate through the shaft, the arc-shaped clamping surface 18 of the special-shaped piece 16 gradually contacts the outer side surface of the clamping piece 6 in the middle position and the inner side surface of the outer fixed vertical plate 21, since the distance between the outermost end surface of the arc-shaped clamping surface 18 and the center gradually increases, the clamping piece 6 in the middle position is extruded to move towards the direction of the other clamping piece 6, and the outer fixed vertical plate 21 is extruded to move outward, since the outer fixed vertical plate 21 is connected with the other clamping piece 6 through the connecting rod 19, the other clamping piece 6 is driven to move towards the clamping piece 6 in the middle position.

[0045] The driving motor 12 drives the output shaft to rotate, the fourth bevel gear 24 rotates through the meshing connection relationship with the first bevel gear 13, thereby driving the rotating driving shaft 26 to rotate, since the sliding sleeve 28 is provided with a groove matched with the helical driving piece 27 on the rotating driving shaft 26, the sliding sleeve 28 moves downward, and the upper supporting platform 29 moves downward.

[0046] The upper supporting platform 29 gradually moves downward and away from the metal piece, the two clamping pieces 6 move towards the direction of the metal piece, and the clamping plate 10 clamps the metal piece.

[0047] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A jig for machining a metal piece comprising a C-shaped support plate (2), characterized in that: The upper end of the C-shaped support plate (2) is fixed with a first fixed seat (3) and a second fixed seat (4), the first fixed seat (3) and the second fixed seat (4) are the same shape, the first fixed seat (3) and the second fixed seat (4) are symmetrically arranged, and the upper end surface of the first fixed seat (3) and the second fixed seat (4) is provided with a limiting sliding groove (5); The first fixed seat (3) and the second fixed seat (4) are slidably connected with a clamping piece (6), the clamping piece (6) comprises an upper sliding plate (7), a fixed block (8) and a limiting sliding block (9), the upper sliding plate (7) is located on the upper end of the first fixed seat (3) and the second fixed seat (4), the fixed block (8) is integrally connected to the outer side of the front and rear ends of the upper sliding plate (7), and the limiting sliding block (9) is integrally connected to the lower end of the upper sliding plate (7) and is limited to slide along the limiting sliding groove (5); The upper end of the C-shaped support plate (2) is provided with a driving special-shaped part (16), the outer surface of the driving special-shaped part (16) is alternately connected by two arc-shaped relaxation surfaces (17) and two arc-shaped clamping surfaces (18), the center of the arc-shaped relaxation surface (17) is the same as the rotation center of the driving special-shaped part (16), and the distance between the outer end surface of the arc-shaped clamping surface (18) and the rotation center of the driving special-shaped part (16) increases with the rotation direction; The fixed block (8) on the first fixed seat (3) and the fixed block (8) on the second fixed seat (4) are connected through a connecting rod (19), one end of the connecting rod (19) is provided with a cap, the connecting rod (19) passes through the fixed block (8) on the first fixed seat (3) and the fixed block (8) on the second fixed seat (4), the connecting rod (19) is slidably connected with the fixed block (8) on the second fixed seat (4), the other end of the two connecting rods (19) is provided with an outer fixed vertical plate (21), the outer surface of the driving special-shaped part (16) is attached to the inner surface of the outer fixed vertical plate (21) and the outer surface of the clamping piece (6) on the upper end of the second fixed seat (4), and a pressure spring (23) is arranged outside the connecting rod (19) between the fixed block (8) on the first fixed seat (3) and the fixed block (8) on the second fixed seat (4).

2. The jig for processing a metal piece according to claim 1, characterized in that: A support assembly (25) is arranged between the first fixed seat (3) and the second fixed seat (4) on the C-shaped support plate (2), the support assembly (25) comprises a rotating drive shaft (26), the rotating drive shaft (26) is connected with the C-shaped support plate (2) and is rotatably connected through a bearing, a spiral drive part (27) is fixed on the outer part of the rotating drive shaft (26) along the upper end of the C-shaped support plate (2), a sliding sleeve (28) is arranged on the outer upper end of the rotating drive shaft (26) and the spiral drive part (27), a spiral groove matched with the cross section of the spiral drive part (27) is formed in the sliding sleeve (28), an upper support platform (29) is fixed on the upper end of the sliding sleeve (28), and a lower limiting vertical rod (30) is fixed on the lower end of the upper support platform (29) along the front and rear ends of the sliding sleeve (28) and extends downward through the C-shaped support plate (2).

3. The jig for processing a metal piece according to claim 2, characterized in that: The lower end of the C-shaped support plate (2) is provided with a driving motor (12), and the output shaft end of the driving motor (12) is externally provided with a first bevel gear (13) and a second bevel gear (14).

4. The jig for processing a metal piece according to claim 3, characterized in that: The lower end of the rotating driving shaft (26) is connected with a fourth bevel gear (24) through the C-shaped support plate (2), the fourth bevel gear (24) is engaged with the first bevel gear (13), and the shaft of the driving special-shaped part (16) is connected with a third bevel gear (15) through the C-shaped support plate (2), the third bevel gear (15) is engaged with the second bevel gear (14).

5. The clamp for processing a metal piece according to claim 1, wherein: The inner side of the upper sliding plate (7) is fixed with a connecting plate (11) through a screw, and the inner side of the connecting plate (11) is welded with a clamping plate (10), and the clamping plate (10) is vertically arranged.

6. The clamp for processing a metal piece according to claim 1, wherein: The connecting rod (19) is fixed with a threaded column (20) at one end close to the outer fixed vertical plate (21), the threaded column (20) is externally threadedly connected with a fixed nut (22), and the threaded column (20) is threadedly connected with the fixed nut (22) through the outer fixed vertical plate (21).

7. The clamp for processing a metal piece according to claim 1, wherein: The lower end of the C-shaped support plate (2) is welded with a mounting horizontal plate (1), the mounting horizontal plate (1) is provided with mounting holes at four corner positions, and the mounting horizontal plate (1) is internally provided with a rectangular hollow slot (31).

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