Clamping tool for machining nodular iron casting

Abstract

A clamping tool for machining nodular iron castings comprises a tool table, a rotating table is arranged over the tool table, the bottom of the rotating table is connected with a hollow rotating shaft, one end of the rotating shaft is rotationally connected with a connecting plate, the two ends of the connecting plate are fixedly connected with the inner walls of the two sides of the tool table, and a first driving assembly for rotating the rotating shaft is arranged in the tool table; a sliding groove is formed in the top of the rotating table, a sliding block is slidably connected into the sliding groove, a buffering clamp assembly is arranged at the top end of the sliding block, a second driving assembly for moving the sliding block is arranged between the tool table and the rotating table, electric push rods are arranged on the two sides of the tool table, and mounting plates are fixedly mounted on the extending sections of the two electric push rods. A rotating disc is mounted in the center of the bottom of the mounting plate, and a pressing piece is mounted at the bottom of the rotating disc. Workpieces can be clamped in a rotating mode, multi-angle machining is achieved, efficiency is improved, the surface quality of the workpieces is protected, indentations and scratches are prevented, the deformation risk is reduced, and the rejection rate and cost are effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the nodular cast iron processing field, and particularly relates to a clamping tool for processing nodular cast iron pieces. BACKGROUND

[0002] Nodular cast iron pieces are widely used in the mechanical manufacturing and other industries due to their good mechanical properties and wear resistance.

[0003] In the current field of ferritic nodular cast iron piece processing, the Chinese utility model patent with the application number CN202221404367.6, a clamping device for ferritic nodular cast iron piece processing, by setting an upper clamping roller on the upper part of the frame body, and symmetrically setting clamping pieces on the lower part of the frame body, the device can drive the two clamping pieces to move closer or farther away synchronously by rotating the hand-operated piece on the end of the lead screw, quickly adjust the distance between the two clamping pieces, and thus meet the clamping and fixing of different diameter circular ferritic nodular cast iron pieces.

[0004] However, in actual application, it is found that the existing technology still has some shortcomings. Firstly, after the nodular cast iron piece is clamped and fixed, it cannot be rotated to adjust the processing angle. This limitation makes it inconvenient to further process, greatly affecting the processing efficiency and flexibility. For example, in some scenarios that require multi-angle processing, the workpiece cannot be rotated, and the operator has to frequently adjust the angle and position of the processing tool, increasing the complexity and time cost of the operation. Secondly, the device lacks effective protection measures for the workpiece during clamping and fixing, which may cause damage to the workpiece due to excessive pressure. Nodular cast iron pieces usually have certain precision requirements. Once damaged during clamping, it will not only affect the quality and performance of the workpiece, but also may lead to the failure of the entire processing process, causing waste of resources and increase in production cost. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a clamping tool for processing nodular cast iron pieces. The device is used for work, thereby solving the problem that the existing clamping device for nodular cast iron piece processing cannot rotate after clamping and fixing the workpiece, and is easy to cause damage to the workpiece during clamping and fixing.

[0006] In order to achieve the above object, the utility model provides technical scheme for a kind of clamping tool for processing nodular cast iron piece, including tool table, the tool table is provided with rotating table right above, the bottom center position of rotating table is fixedly connected with hollow rotating shaft, the end of rotating shaft away from rotating table is rotatably connected with connecting plate, the both ends of connecting plate are fixedly connected with the both sides inner wall of tool table, first drive assembly for rotating rotating shaft is equipped in tool table, the top of rotating table is provided with chute, two "L" shaped sliding blocks are slidably connected in chute, buffer clamp component is provided at the top of sliding block, second drive assembly for moving sliding block is equipped between tool table and rotating table, electric push rod is provided on the both sides of tool table, mounting plate is fixedly installed in the extension section of two electric push rods, rotating disc is installed in the bottom center position of mounting plate, lower pressing piece is installed in the bottom of rotating disc.

[0007] Preferably, the first drive assembly includes a first turbine, the first turbine is fixedly sleeved on the outer surface of the rotating shaft, the first turbine is meshingly connected with a first worm on one side, the two ends of the first worm are rotatably connected with the two side inner walls of the tool table, and one end of the first worm is drivingly connected with a first motor through the inner wall of the tool table.

[0008] Preferably, the second drive assembly includes a two-way threaded screw rod, the two-way threads on the surface of the screw rod are respectively threadedly connected with the two sliding blocks, the two ends of the screw rod are rotatably connected with the two side inner walls of the chute, a second turbine is fixedly sleeved on the surface of the middle part of the screw rod, the second turbine is meshingly connected with a second worm on one side, the second worm is movably sleeved in the rotating shaft, the surface of the second worm is rotatably connected with the top inner wall of the rotating table, the end of the second worm away from the screw rod is rotatably connected with the bottom inner wall of the tool table, a third turbine is fixedly sleeved on the surface of the second worm below the connecting plate, the third turbine is meshingly connected with a third worm on one side, the two ends of the third worm are rotatably connected with the two side inner walls of the tool table, and the end of the third worm is drivingly connected with a second motor through the inner wall of the tool table.

[0009] Preferably, the buffer clamp component includes an "equal-arm L"-shaped supporting block, the outer side wall of the supporting block is fixedly arranged on the top of the sliding block, the two inner side walls of the supporting block are uniformly provided with first springs, and the end of the first spring away from the supporting block is fixedly installed with a clamping block.

[0010] Preferably, the two inner side walls of the supporting block are provided with limiting holes in the first springs, a limiting rod is slidably connected in the limiting hole, and the end of the limiting rod away from the limiting hole is fixedly arranged on the side wall of the clamping block.

[0011] Preferably, the clamping surface of the clamping block is attached with a rubber pad, and the surface of the rubber pad is provided with anti-skid texture.

[0012] Preferably, the lower pressing piece comprises a supporting seat, a positioning groove is formed in the center of the supporting seat, a second spring is arranged at the groove bottom of the positioning groove, a pressing rod is fixedly installed at one end of the second spring close to the groove opening of the positioning groove, the surface of the pressing rod is in sliding connection with the positioning groove, and a hemispherical elastic fixing block is installed at the other end of the pressing rod away from the supporting seat.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. By controlling the first driving assembly to drive the rotating table to rotate, the workpiece can be rotated after being clamped, so that the workpiece can be operated from different angles during processing without frequent disassembly and repositioning, reducing the processing procedures and time and improving the flexibility and efficiency of processing.

[0015] 2. During clamping, the first spring, the rubber pad and the second spring and other components play a buffering role, reducing the local stress concentration of the workpiece during clamping, thereby reducing the risk of workpiece deformation and damage, avoiding the direct action of clamping force on the surface of the workpiece, preventing the workpiece surface from appearing indentation, scratch and other damage, reducing the scrap rate and maintenance cost caused by clamping damage, and improving the economic benefit of production. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a structural schematic view of the utility model;

[0018] Figure 3 It is a structural schematic view of the utility model;

[0019] Figure 4 It is a structural schematic view of the utility model;

[0020] Figure 5 It is a structural schematic view of the utility model;

[0021] Figure 6 It is a structural schematic view of the utility model;

[0022] Figure 7 It is a structural schematic view of the utility model.

[0023] In the figure: 1, tooling table; 2, rotating table; 3, rotating shaft; 4, connecting plate; 5, first driving assembly; 501, first turbine; 502, first worm; 503, first motor; 6, sliding groove; 7, sliding block; 8, buffer clamp assembly; 801, supporting block; 8011, limiting hole; 802, first spring; 803, clamping block; 8031, limiting rod; 8032, rubber pad; 9, second driving assembly; 901, screw rod; 902, second turbine; 903, third turbine; 904, third worm; 905, second motor; 10, electric push rod; 11, mounting plate; 12, rotating disc; 13, pressing piece; 1301, supporting seat; 1302, second spring; 1303, pressing rod; 1304, elastic fixing block; 1304, positioning groove. DETAILED DESCRIPTION

[0024] 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, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] In order to further understand the content of the utility model, the utility model will be described in detail in combination with the drawings.

[0026] In combination with Figures 1-7 A kind of clamping tool for processing nodular cast iron piece, including tooling table 1, rotating table 2 is provided in the top of tooling table 1, the bottom center position of rotating table 2 is fixedly connected with hollow rotating shaft 3, connecting plate 4 is rotatably connected with the end of rotating shaft 3 away from rotating table 2, the both ends of connecting plate 4 are fixedly connected with the inner wall of the both sides of tooling table 1, tooling table 1 is equipped with the first driving assembly 5 of rotating rotating shaft 3, under the action of first driving assembly 5, the whole clamping structure is rotated, the multi-angle processing of nodular cast iron piece is realized, the top of rotating table 2 is provided with sliding groove 6, two "L" shaped sliding blocks 7 are slidably connected in sliding groove 6, buffer clamp assembly 8 is arranged at the top of sliding block 7, second driving assembly 9 for moving sliding block 7 is arranged between tooling table 1 and rotating table 2, under the action of second driving assembly 9, sliding block 7 slides in sliding groove 6, realizes the clamping and loosening operation of nodular cast iron piece, tooling table 1 is provided with electric push rod 10 on the both sides, mounting plate 11 is fixedly installed in the extension section of two electric push rods 10, rotating disc 12 is installed in the bottom center position of mounting plate 11, pressing piece 13 is installed in the bottom of rotating disc 12, and pressing piece 13 is pushed up and down by telescopic movement to move mounting plate 11, so that pressing piece 13 is close to or away from nodular cast iron piece, and the pressing or loosening operation of workpiece is realized.

[0027] The first driving assembly 5 comprises a first turbine 501 fixedly sleeved on the outer surface of the rotating shaft 3, one side of the first turbine 501 being engaged with a first worm 502, two ends of the first worm 502 being rotatably connected with the inner walls of the two sides of the tool table 1, one end of the first worm 502 penetrating through the inner wall of the tool table 1 being drivingly connected with a first motor 503, the first motor 503 being started to drive the first worm 502 to rotate, the first worm 502 being engaged with the first turbine 501 to drive the first turbine 501 to rotate, the rotating shaft 3 being driven to rotate by the first turbine 501, and the rotating table 2 being further driven to rotate.

[0028] The second driving assembly 9 comprises a screw rod 901 with bidirectional threads, the bidirectional threads on the surface of the screw rod 901 being threadedly connected with two sliding blocks 7 respectively, two ends of the screw rod 901 being rotatably connected with the inner walls of the two sides of the sliding groove 6, the middle surface of the screw rod 901 being fixedly sleeved with a second turbine 902, one side of the second turbine 902 being engaged with a second worm 903, the second worm 903 being movably sleeved in the rotating shaft 3, the surface of the second worm 903 being rotatably connected with the inner wall of the top end of the rotating table 2, the end of the second worm 903 away from the screw rod 901 being rotatably connected with the inner wall of the bottom end of the tool table 1, the surface of the second worm 903 being fixedly sleeved with a third turbine 904 below the connecting plate 4, one side of the third turbine 904 being engaged with a third worm 905, two ends of the third worm 905 being rotatably connected with the inner walls of the two sides of the tool table 1, one end of the third worm 905 penetrating through the inner wall of the tool table 1 being drivingly connected with a second motor 906, the second motor 906 being started to drive the third worm 905 to rotate, the third worm 905 driving the third turbine 904 to rotate, and the second worm 903 being further driven to rotate, the second worm 903 driving the second turbine 902 to rotate due to the engagement between the second worm 903 and the second turbine 902, and the screw rod 901 being driven to rotate in the sliding groove 6 of the rotating table 2, the screw rod 901 being designed with bidirectional threads, the two sliding blocks 7 sliding towards or away from each other in the sliding groove 6 when the screw rod 901 rotates, so as to adjust the distance between the two sliding blocks 7.

[0029] The buffer clamp assembly 8 comprises a support block 801 in the shape of an "equal-arm L", one side wall of the outer part of the support block 801 being fixedly arranged on the top of the sliding block 7, the two inner side walls of the support block 801 being uniformly provided with first springs 802, one end of the first spring 802 away from the support block 801 being fixedly installed with a clamping block 803, the first spring 802 connecting the support block 801 and the clamping block 803 to provide a buffering effect when clamping the nodular cast iron piece, so as to avoid damage to the workpiece due to excessive clamping force.

[0030] The inner two side walls of the support block 801 are provided with a limiting hole 8011 in the first spring 802, a limiting rod 8031 is slidably connected in the limiting hole 8011, and the end of the limiting rod 8031 away from the limiting hole 8011 is fixedly arranged on the side wall of the clamping block 803, so that the moving direction of the clamping block 803 is stable, and the clamping block 803 is prevented from deviating during clamping.

[0031] The clamping surface of the clamping block 803 is attached with a rubber pad 8032, and the surface of the rubber pad 8032 is provided with anti-skid texture, which further enhances the protection of the workpiece and prevents scratching the surface of the workpiece, while increasing the friction and improving the stability of clamping.

[0032] The lower pressing piece 13 comprises a support seat 1301, a positioning groove 1305 is formed in the center of the support seat 1301, a second spring 1302 is arranged at the groove bottom of the positioning groove 1305, a pressing rod 1303 is fixedly installed at one end of the second spring 1302 close to the groove opening of the positioning groove 1305, the surface of the pressing rod 1303 is slidably connected with the positioning groove, and a semispherical elastic fixing block 1304 is installed at the end of the pressing rod 1303 away from the support seat 1301, and the elastic fixing block 1304 can be made of rubber or other materials. When the pressing rod 1303 contacts the workpiece, the support seat 1302 is compressed, so that the elastic fixing block 1304 is pressed against the ductile iron piece at a proper pressure, the workpiece is further fixed, and displacement of the workpiece during machining is prevented.

[0033] Working principle:

[0034] First, the second motor 906 is started, the second motor 906 drives the third worm 905 to rotate, the third worm 905 drives the third turbine 904 to rotate, and then the second worm 903 starts to rotate. Since the second worm 903 is meshingly connected with the second turbine 902, the rotation of the second worm 903 drives the second turbine 902 to rotate, so that the lead screw 901 rotates in the sliding groove 6 of the rotating table 2. The lead screw 901 is designed as a bidirectional screw thread, and when the lead screw 901 rotates, the two sliding blocks 7 slide towards or away from each other in the sliding groove 6, so as to adjust the distance between the two sliding blocks 7.

[0035] The ductile iron piece to be machined is placed between the buffer clamping assemblies 8 at the top ends of the two sliding blocks 7. As the sliding blocks 7 move, the clamping blocks 803 in the buffer clamping assemblies 8 gradually approach the ductile iron piece. The first spring 802 of the inner two side walls of the support block 801 plays a buffering role in the process that the clamping block 803 approaches the workpiece, so as to avoid instant damage to the workpiece due to excessive clamping force. At the same time, the rubber pad 8032 attached to the clamping surface of the clamping block 803 further enhances the protection of the workpiece, the limiting rod 8031 slides in the limiting hole 8011 of the support block 801, and the moving direction of the clamping block 803 is stable and accurate.

[0036] Then, the electric push rod 10 on both sides of the tooling platform 1 is started, the electric push rod 10 pushes the mounting plate 11 to move downwards, the rotating disc 12 at the bottom center position of the mounting plate 11 and the lower pressing piece 13 installed at the bottom of the rotating disc 12 are close to the nodular cast iron piece, the second spring 1302 arranged in the supporting seat 1301 of the lower pressing piece 13 plays a buffering role in this process, when the pressing rod 1303 contacts the workpiece, the second spring 1302 is compressed, the elastic fixing block 1304 is pressed against the nodular cast iron piece with appropriate pressure, the workpiece is further fixed, and displacement of the workpiece in the machining process is prevented.

[0037] When different angle machining operations need to be carried out on the nodular cast iron piece, the first motor 503 is started, the first motor 503 drives the first worm 502 to rotate, the first worm 502 is engaged with the first turbine 501, thereby driving the first turbine 501 to rotate, since the first turbine 501 is fixedly sleeved on the outer surface of the rotating shaft 3, the rotating shaft 3 rotates under the driving of the first turbine 501, thereby driving the rotating table 2 to rotate, at this time, since the rotating disc 12 is arranged, the lower pressing piece 13 can rotate along with the rotating table 2 and the workpiece after pressing the workpiece from top to bottom, the rotating disc 12 enables the lower pressing piece 13 to tightly press the workpiece while being flexible to adapt to the rotation of the rotating table 2, thereby providing a powerful guarantee for multi-angle machining of the nodular cast iron piece.

[0038] In summary, the clamping tool of the utility model solves the problems in the prior art through the synergistic effect of various components, and improves the machining efficiency and quality of the nodular cast iron piece.

[0039] It should be noted that, in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations exist in any such actual relationship or order. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0040] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A clamping tool for machining a ductile iron piece, comprising a tool table (1), characterized in that: The rotating table (2) is provided above the tooling table (1), the bottom center position of the rotating table (2) is fixedly connected with a hollow rotating shaft (3), one end of the rotating shaft (3) away from the rotating table (2) is rotatably connected with a connecting plate (4), the two ends of the connecting plate (4) are fixedly connected with the two side inner walls of the tooling table (1), the tooling table (1) is provided with a first drive assembly (5) for rotating the rotating shaft (3), the top of the rotating table (2) is provided with a sliding groove (6), the sliding groove (6) is slidably connected with two "L" shaped sliding blocks (7), the top of the sliding block (7) is provided with a buffer clamp assembly (8), the tooling table (1) and the rotating table (2) are provided with a second drive assembly (9) for moving the sliding block (7), the two sides of the tooling table (1) are provided with electric push rods (10), the extension sections of the two electric push rods (10) are fixedly installed with mounting plates (11), the bottom center position of the mounting plate (11) is installed with a rotating disc (12), the bottom of the rotating disc (12) is installed with a pressing piece (13).

2. The clamping tool for machining a ductile cast iron piece according to claim 1, characterized in that: The first drive assembly (5) comprises a first turbine (501), the first turbine (501) is fixedly sleeved on the outer surface of the rotating shaft (3), one side of the first turbine (501) is meshedly connected with a first worm (502), the two ends of the first worm (502) are rotatably connected with the two side inner walls of the tooling table (1), one end of the first worm (502) penetrates through the inner wall of the tooling table (1) and is drivingly connected with a first motor (503).

3. The clamping tool for machining a ductile cast iron piece according to claim 1, wherein: The second drive assembly (9) comprises a two-way threaded screw rod (901), the two-way threads on the surface of the screw rod (901) are respectively threadedly connected with the two sliding blocks (7), the two ends of the screw rod (901) are rotatably connected with the two side inner walls of the sliding groove (6), the middle surface of the screw rod (901) is fixedly sleeved with a second turbine (902), one side of the second turbine (902) is meshedly connected with a second worm (903), the second worm (903) is movably sleeved in the rotating shaft (3), the surface of the second worm (903) is rotatably connected with the top inner wall of the rotating table (2), one end of the second worm (903) away from the screw rod (901) is rotatably connected with the bottom inner wall of the tooling table (1), the surface of the second worm (903) is fixedly sleeved below the connecting plate (4) with a third turbine (904), one side of the third turbine (904) is meshedly connected with a third worm (905), the two ends of the third worm (905) are rotatably connected with the two side inner walls of the tooling table (1), one end of the third worm (905) penetrates through the inner wall of the tooling table (1) and is drivingly connected with a second motor (906).

4. The clamping fixture for machining a ductile iron piece according to claim 1, characterized in that: The buffer clamp assembly (8) comprises an "equal-arm L" shaped supporting block (801), the outer side wall of the supporting block (801) is fixedly arranged on the top of the sliding block (7), the inner two side walls of the supporting block (801) are uniformly provided with first springs (802), one end of the first spring (802) away from the supporting block (801) is fixedly installed with a clamping block (803).

5. A clamping fixture for machining a ductile iron piece according to claim 4, characterized in that: The inside two side walls of the support block (801) are provided with limiting holes (8011) in the first spring (802), a limiting rod (8031) is slidably connected in the limiting holes (8011), and one end of the limiting rod (8031) away from the limiting holes (8011) is fixedly arranged on the side wall of the clamping block (803).

6. The clamping fixture for machining a ductile iron piece according to claim 4, characterized in that: The clamping surface of the clamping block (803) is attached with a rubber pad (8032), and the surface of the rubber pad (8032) is provided with anti-skid textures.

7. The clamping fixture for machining a ductile iron piece according to claim 1, characterized in that: The lower pressing piece (13) comprises a support seat (1301), a positioning groove (1305) is formed in the center position of the support seat (1301), a second spring (1302) is arranged on the groove bottom of the positioning groove (1305), a pressing rod (1303) is fixedly installed on one end of the second spring (1302) close to the groove opening of the positioning groove (1305), the surface of the pressing rod (1303) is in sliding connection with the positioning groove, and a semispherical elastic fixing block (1304) is installed on one end of the pressing rod (1303) away from the support seat (1301).

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