Multi-station pneumatic clamping tool

Abstract

The utility model discloses a multi-station pneumatic clamping tool which comprises a fixing base and a clamping base, a middle groove is formed in the middle of the upper portion of the clamping base, a plurality of upper clamping grooves are symmetrically formed in the side walls of the two sides of the middle groove, and bidirectional OK clamps are arranged at the positions, corresponding to the upper clamping grooves, of the middle of the clamping base. The clamping base is provided with the pneumatic pipeline and the piston pipelines, the pneumatic pipelines and the piston pipelines are matched with the corresponding pneumatic pistons and the bidirectional OK clamps, a plurality of driving air cylinders can be formed under the driving of the connecting bolts and used for opening the corresponding bidirectional OK clamps, the bidirectional OK clamps can be directly opened at the same time only by opening and closing the control valves in the pneumatic pipelines, and the operation is convenient. And a worker does not need to manually release the workpiece clamping state, and only needs to change materials, so that the single-time material changing efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tool fixture technical field, especially a kind of multi-station pneumatic clamping tool. BACKGROUND

[0002] Numerical control machining center is by mechanical equipment and numerical control system composition and is suitable for processing complex parts high efficiency automation machine tool.Numerical control machining center is one of the highest output, the most widely used numerical control machine tool in the world.It has strong comprehensive processing capacity, and can complete more processing content after workpiece once clamping, and processing precision is higher, and the efficiency of batch workpiece of medium processing difficulty is 5-10 times of ordinary equipment, especially it can complete the processing that many ordinary equipment cannot complete, and it is more suitable for single-piece processing or small batch multi-species production of shape more complex and high-precision.

[0003] The workpiece clamping tool for numerical control machining center is usually using flat-nose pliers or three-jaw chuck, although clamping is stable and the use range is wide, but due to the fact that it occupies larger space, at most three to four are arranged on the workbench, so that only a small amount of workpieces can be clamped during processing, although it can meet the demand of processing small batch workpieces, but for mass production of workpieces, due to the need for multiple stoppage and material change, it will lead to low overall processing efficiency, in the prior art, the clamping station can be increased by arranging two-way OK clamps and fixed single / dual-way clamping seats, although the change frequency can be improved to a certain extent by reducing the stoppage and material change, but each OK clamp needs to be screwed to be fastened or released, so that the worker needs to screw a large number of screws during each material change, and the operation of clamping and releasing is repeated, not only the manual labor intensity is high, but also the single material change time is long, which has further improvement space. UTILITY MODEL CONTENTS

[0004] The utility model is aimed at at least solving one of the technical problems existing in the prior art, and provides a kind of multi-station pneumatic clamping tool, solve the above problems.

[0005] To achieve the above object, provide a kind of multi-station pneumatic clamping tool, including fixed seat and clamping base, the upper side of the fixed seat is fixedly connected with clamping base, the lower side of the one side of the clamping base is provided with two double cylinders, the upper side of the one side of the clamping base away from double cylinder is equipped with eight side clamping grooves, the bottom of the one side of the clamping base close to side clamping groove is slidably connected with four double-end clamping plates;

[0006] The clamping base has a central groove at its upper center, and multiple upper clamping grooves are symmetrically formed on both sides of the central groove. A bidirectional OK clamp is provided at the position corresponding to the upper clamping groove in the middle of the clamping base. Pneumatic clamping blocks are provided at both ends of the multiple bidirectional OK clamps. A pneumatic pipe is provided in the middle of the inner side of the clamping base. A piston pipe is provided above the pneumatic pipe at the position corresponding to the multiple bidirectional OK clamps. A pneumatic piston is slidably connected inside the multiple piston pipes. A connecting bolt is provided at the center of the multiple bidirectional OK clamps. The bottom of the multiple connecting bolts passes through the bidirectional OK clamps and is fixedly connected to the corresponding pneumatic piston.

[0007] According to the multi-station pneumatic clamping fixture, the bidirectional OK clamp includes two clamping sliders and a central wedge block limiting bolt hole. Each of the two clamping sliders has a sliding inclined surface complementary to the two sides of the central wedge block on the side closest to it. Trapezoidal slide rails are provided in the middle of both sides of the central wedge block. Trapezoidal grooves corresponding to the trapezoidal slide rails are opened in the middle of the side of each of the two clamping sliders closest to the central wedge block. The two sides of the central wedge block are slidably connected to the two clamping sliders respectively through the cooperation of the trapezoidal slide rails and the trapezoidal grooves. Semi-circular arc grooves are opened in the middle of the two trapezoidal slide rails and the trapezoidal grooves. Return springs are filled in the middle of the two trapezoidal slide rails and the trapezoidal grooves through the cooperation of the semi-circular arc grooves.

[0008] According to the multi-station pneumatic clamping fixture, the two output ends of the two double cylinders are respectively fixedly connected to the two corresponding double-headed clamping plates.

[0009] According to the multi-station pneumatic clamping fixture, each of the four double-headed clamping plates is provided with a clamp on both sides above, and the positions of the eight clamps correspond one-to-one with the positions of the eight side clamping slots.

[0010] According to the multi-station pneumatic clamping fixture, each of the central wedge blocks has a limit bolt hole at its center, and each of the connecting bolts passes through the corresponding limit bolt hole and is threaded to the corresponding pneumatic piston.

[0011] According to the multi-station pneumatic clamping fixture, the ends of the multiple pneumatic clamping blocks away from the upper clamping groove are respectively fixedly connected to the corresponding clamping sliders.

[0012] The above solution has at least one of the following beneficial effects:

[0013] 1. The clamping base of the utility model is provided with pneumatic pipeline and multiple piston pipeline, cooperates corresponding pneumatic piston and bidirectional OK clamp, can form multiple drive cylinders under the driving of connecting bolt, is used for opening corresponding bidirectional OK clamp, only needs to open and close control valve in pneumatic pipeline, can directly open multiple bidirectional OK clamp at the same time, does not need staff to manually release workpiece clamping state, staff only needs to change material, greatly improves the efficiency of single material change, strengthens the practicality of device.

[0014] 2. The clamping base of the utility model is provided with multiple side clamping grooves on the side, cooperates double cylinder and double-head clamping plate, can drive two cylinders to make four double-head clamping plates clamp eight clamping stations on the basis of increasing processing station, simplifies air path pipeline and control valve group on the basis of guaranteeing stable clamping, strengthens the practicality of device.

[0015] The additional aspects and advantages of the utility model will be partly given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further explained in connection with the drawings and embodiments;

[0017] Figure 1 It is left side three-dimensional structure schematic diagram of a kind of multi-station pneumatic clamping tool of the utility model;

[0018] Figure 2 It is right side three-dimensional structure schematic diagram of a kind of multi-station pneumatic clamping tool of the utility model;

[0019] Figure 3 It is front structure schematic diagram of a kind of multi-station pneumatic clamping tool of the utility model;

[0020] Figure 4 It is internal structure schematic diagram of a kind of multi-station pneumatic clamping tool of the utility model.

[0021] LEGEND:

[0022] 1, fixed seat;2, clamping base;3, double cylinder;4, side clamping groove;5, double-head clamping plate;6, middle groove;7, upper clamping groove;8, pneumatic pipeline;9, bidirectional OK clamp;10, piston pipeline;11, pneumatic piston;12, connecting bolt;13, pneumatic clamping block;91, clamping sliding block;92, middle wedge;93, trapezoidal sliding groove;94, trapezoidal sliding rail;95, limit bolt hole;96, return spring. DETAILED DESCRIPTION

[0023] The detailed embodiments of the utility model will be described in detail in this part, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the written part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0024] Referring to Figures 1-4 The utility model discloses a kind of multi-station pneumatic clamping tool, including fixed seat 1 and clamping pedestal 2, the top of fixed seat 1 is fixedly connected with clamping pedestal 2, the side below of clamping pedestal 2 is provided with two double cylinders 3, eight side clamping grooves 4 are set up in the top of the side of clamping pedestal 2 away from double cylinder 3, four double-end clamping plates 5 are slidably connected with the side of the bottom of clamping pedestal 2 close to side clamping groove 4, the output of two double cylinders 3 is fixedly connected with corresponding two double-end clamping plates 5 respectively, the top of four double-end clamping plates 5 is provided with chuck, the position of eight chucks is one-to-one corresponding with the position of eight side clamping grooves 4, multiple side clamping grooves 4 opened in the side of clamping pedestal 2, cooperate double cylinder 3 and double-end clamping plate 5, can be driven by two cylinders on the basis of increasing processing station, make four double-end clamping plates 5 simultaneously carry out clamping work to eight clamping stations, on the basis of guaranteeing stable clamping, simplify air path pipeline and control valve group, strengthen the practicability of device;

[0025] The middle part of the top of clamping pedestal 2 is provided with middle groove 6, the side wall of middle groove 6 is symmetrically provided with multiple upper clamping grooves 7, the position of the middle part of clamping pedestal 2 corresponding with upper clamping groove 7 is provided with bidirectional OK clamp 9, bidirectional OK clamp 9 includes two clamping sliding blocks 91 and one middle wedge block 92 limit bolt hole 95, the side of two clamping sliding blocks 91 close to middle wedge block 92 is provided with the sliding inclined plane complementary with the two sides of middle wedge block 92, the middle part of the two sides of middle wedge block 92 is provided with trapezoidal slide rail 94, the middle part of the side of two clamping sliding blocks 91 close to middle wedge block 92 is provided with trapezoidal slide groove 93 corresponding with trapezoidal slide rail 94, the two sides of middle wedge block 92 are slidably connected with two clamping sliding blocks 91 respectively through the cooperation of trapezoidal slide rail 94 and trapezoidal slide groove 93, the middle part of two trapezoidal slide rails 94 and trapezoidal slide grooves 93 is provided with semicircular groove, the middle part of two trapezoidal slide rails 94 and trapezoidal slide grooves 93 is filled with reset spring 96 through the cooperation of semicircular groove, when middle wedge block 92 moves upwards, the clamping sliding block 91 of two sides moves outward and carries out clamping work, when middle wedge block 92 moves downwards, the clamping sliding block 91 of two sides moves inward and releases workpiece;

[0026] The two ends of the plurality of bidirectional OK clamps 9 are provided with pneumatic clamping blocks 13, the plurality of pneumatic clamping blocks 13 are fixedly connected with corresponding clamping sliding blocks 91 away from the one end of the upper clamping groove 7, the inner side middle part of the clamping base 2 is provided with a pneumatic pipeline 8, the upper part of the pneumatic pipeline 8 is provided with a plurality of piston pipelines 10 corresponding to the plurality of bidirectional OK clamps 9, the plurality of piston pipelines 10 are slidably connected with pneumatic pistons 11, the center of the plurality of bidirectional OK clamps 9 is provided with connecting bolts 12, the center of the plurality of middle wedge blocks 92 is provided with limiting bolt holes 95, and the plurality of connecting bolts 12 are respectively screwed with corresponding pneumatic pistons 11 through corresponding limiting bolt holes 95, so that a plurality of drive cylinders for opening corresponding bidirectional OK clamps 9 are formed under the linkage of the connecting bolts 12, only the control master valve of the pneumatic pipeline 8 needs to be opened and closed, the middle wedge block 92 is moved downward through pipeline negative pressure and pulling of the pneumatic piston 11, the plurality of bidirectional OK clamps 9 can be directly opened at the same time, manual release of the workpiece clamping state is not needed, workers only need to replace materials, and the efficiency of single material replacement is greatly improved.

[0027] Working principle: when the utility model is used, the pneumatic pipeline 8 and the plurality of piston pipelines 10 of the clamping base 2 are matched with corresponding pneumatic pistons 11 and bidirectional OK clamps 9, a plurality of drive cylinders for opening corresponding bidirectional OK clamps 9 are formed under the linkage of the connecting bolts 12, only the control master valve of the pneumatic pipeline 8 needs to be opened and closed, the plurality of bidirectional OK clamps 9 can be directly opened at the same time, manual release of the workpiece clamping state is not needed, workers only need to replace materials, and the efficiency of single material replacement is greatly improved, meanwhile, the plurality of side clamping grooves 4 are arranged on the side of the clamping base 2, the double-cylinder 3 and the double-head clamping plate 5 are matched, on the basis of increasing machining stations, four double-head clamping plates 5 correspond to eight clamping stations and simultaneously perform clamping work through the driving of two cylinders, on the basis of ensuring stable clamping, the gas circuit pipeline and the control valve group are simplified, and the practicability of the device is strengthened.

[0028] The utility model has been described in detail in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of ordinary skill in the art without departing from the purpose of the utility model.

Claims

1. A multi-station pneumatic clamping tool comprising a fixed seat (1) and a clamping base (2), characterized in that: The upper side of the fixed seat (1) is fixedly connected with a clamping base (2), two double gas cylinders (3) are arranged on the lower side of one side of the clamping base (2), eight side clamping grooves (4) are arranged on the upper side of the side of the clamping base (2) away from the double gas cylinders (3), and four double-head clamping plates (5) are slidably connected to the bottom of the clamping base (2) on the side close to the side clamping grooves (4). A middle groove (6) is arranged on the upper middle part of the clamping base (2), a plurality of upper clamping grooves (7) are symmetrically arranged on the side walls on both sides of the middle groove (6), a two-way OK clamp (9) is arranged at the position corresponding to the upper clamping groove (7) in the middle part of the clamping base (2), a pneumatic clamping block (13) is arranged at the two ends of the two-way OK clamp (9), a pneumatic pipeline (8) is arranged in the middle part of the inner side of the clamping base (2), a piston pipeline (10) is arranged at the position corresponding to the two-way OK clamp (9) on the upper side of the pneumatic pipeline (8), a pneumatic piston (11) is slidably connected to the inside of the piston pipeline (10), and a connecting bolt (12) is arranged at the center of the two-way OK clamp (9) and is fixedly connected to the corresponding pneumatic piston (11) through the bottom of the connecting bolt (12).

2. The multi-station pneumatic clamping tool according to claim 1, characterized in that, The two-way OK clamp (9) comprises two clamping sliding blocks (91) and a middle wedge block (92) limiting bolt hole (95), the side of each clamping sliding block (91) close to the middle wedge block (92) is provided with a sliding inclined surface complementary to the two sides of the middle wedge block (92), the middle part of each side of the middle wedge block (92) is provided with a trapezoidal sliding rail (94), the middle part of the side of each clamping sliding block (91) close to the middle wedge block (92) is provided with a trapezoidal sliding groove (93) corresponding to the trapezoidal sliding rail (94), the two sides of the middle wedge block (92) are slidably connected with the two clamping sliding blocks (91) through the cooperation of the trapezoidal sliding rail (94) and the trapezoidal sliding groove (93), and the middle part of each of the trapezoidal sliding rail (94) and the trapezoidal sliding groove (93) is provided with a semicircular groove, and the middle part of each of the trapezoidal sliding rail (94) and the trapezoidal sliding groove (93) is filled with a reset spring (96) through the cooperation of the semicircular groove.

3. The multi-station pneumatic clamping tool of claim 1, wherein, The two output ends of the two double gas cylinders (3) are fixedly connected with the corresponding two double-head clamping plates (5) respectively.

4. The multi-station pneumatic clamping tool of claim 1, wherein, The upper sides of the four double-head clamping plates (5) are provided with clamping heads, and the positions of the eight clamping heads correspond one by one to the positions of the eight side clamping grooves (4).

5. The multi-station pneumatic clamping tool of claim 2, wherein, The center of each of the plurality of middle wedge blocks (92) is provided with a limiting bolt hole (95), and the plurality of connecting bolts (12) are respectively screwed with the corresponding pneumatic pistons (11) through the corresponding limiting bolt holes (95).

6. The multi-station pneumatic clamping tool of claim 2, wherein, One end of each of the plurality of pneumatic clamping blocks (13) away from the upper clamping groove (7) is fixedly connected with the corresponding clamping sliding block (91).

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