CN206643662U - Fast CNC clamping fixture - Google Patents

Abstract

The utility model discloses a rapid numerical control clamping jig, which comprises a prepositioning device and a pneumatic locking device, wherein the prepositioning device comprises a substrate, a supporting table and a plurality of positioning components, and the supporting table is arranged on the upper surface of the substrate; the plurality of positioning components respectively comprise a fixed seat, a support column and a limiting block, the support column is arranged in the fixed seat, and the lower end of the support column is provided with a hook groove; the pneumatic locking device comprises a base, a locking mechanism and a plurality of cylinder assemblies, wherein the locking mechanism comprises a plurality of elastic clamping hands and a sliding seat, the sliding seat is arranged on the base, an elastic element is arranged between the bottom of the sliding seat and the base, an extending hole is formed in the side wall of the sliding seat, and the upper ends of the elastic clamping hands are clamped in hook grooves; the wedge of the cylinder assembly is located in the extension bore. By this, fix a position the work piece in advance through adopting pre-positioning device, then utilize pneumatic locking device to lock the location to the work piece, the operation is swift convenient to, simple structure, easy equipment.

Description

Fast CNC clamping fixture

technical field

The utility model relates to the technology in the field of numerical control processing, in particular to a fast type numerical control clamping fixture.

Background technique

The clamping fixture is a process device used to quickly fasten the workpiece during processing, so that the machine tool, tool, and workpiece maintain the correct relative position. That is to say, Workholding fixture is an indispensable part of mechanical processing. Driven by the development of machine tool technology in the direction of high speed, high efficiency, precision, compound, intelligence and environmental protection, fixture technology is moving towards high precision, high efficiency, modularity, combination and general purpose. , Economic development. However, in the current CNC lathes, the elastic collet is usually used to clamp the product to be processed, but its clamping speed is slow, the product cannot be placed in place, and it can only be used for round products, and cannot process products of different shapes. . Due to the wide variety of digital product accessories and their different shapes, it is necessary to improve the corresponding part of the CNC lathe that installs the product to be processed. Therefore, the existing clamping fixture should be improved to improve the clamping efficiency.

Utility model content

In view of this, the utility model aims at the deficiencies of the existing technology, and its main purpose is to provide a fast type numerical control clamping fixture, which uses a pre-positioning device to pre-position the workpiece, and then uses a pneumatic locking device to fix the workpiece. Locking and positioning are performed, the operation is quick and convenient, and the structure is simple and easy to assemble.

In order to achieve the above object, the utility model adopts the following technical solutions:

A fast numerical control clamping fixture, including a pre-positioning device for pre-positioning the workpiece to be processed and a pneumatic locking device for locking the workpiece to be processed,

The pre-positioning device includes a substrate, a support platform and a plurality of positioning components, and a plurality of vertical channels are arranged side by side on the substrate; the support platform is installed on the upper surface of the substrate, and a plurality of through holes are provided on the support platform; the plurality Each positioning assembly includes a fixed seat, a support column pierced on the fixed seat, and a limit block detachably installed on the top of the support column. The fixed seat is installed at the bottom of the above-mentioned support platform. Installed in the fixed seat, a hooking groove is provided at the lower end of the support column; the above-mentioned support column passes through the through hole;

The pneumatic locking device includes a base, a locking mechanism installed on the base, and a plurality of cylinder assemblies that drive the locking mechanism. The elastic gripper and a plurality of sliding seats used to pull the elastic gripper to move down. The plurality of sliding seats can be slid up and down on the base, and an elastic element is arranged between the bottom of the sliding seat and the base. The side wall of the seat is provided with a protruding hole, the lower end of the elastic gripper is vertically installed on the sliding seat, and the upper end of the elastic gripper passes through the above-mentioned vertical channel and is elastically clamped in the above-mentioned hooking groove; the cylinder assembly includes a cylinder and The wedge-shaped block installed on the shaft end of the cylinder, the side of the cylinder is facing the above-mentioned sliding seat, and the wedge-shaped block is telescopically located in the above-mentioned protruding hole.

As a preferred solution: positioning pins are provided on both sides of the substrate, and positioning holes are provided corresponding to the positioning pins on the support platform, and the positioning pins are inserted into the positioning holes.

As a preferred solution: the positioning pin is tapered.

As a preferred solution: each limit block is respectively provided with a notch, and a clamping part is respectively provided corresponding to the notch at the top of each support column, and the notch is detachably matched with the clamping part.

As a preferred solution: a handle is provided on both sides of the support platform.

As a preferred solution: a plurality of fixing grooves are arranged side by side at the bottom of the support platform, and the plurality of fixing seats are respectively installed in the fixing grooves correspondingly.

As a preferred solution: the base is provided with a plurality of support blocks at intervals, and a baffle plate is respectively provided on the outer walls on both sides of the support block, and the adjacent support blocks and the baffle plates on both sides are formed to allow the sliding seat to slide up and down the chute.

As a preferred solution: a guide rod is arranged laterally on the base, and the guide rod traverses through the above-mentioned plurality of sliding seats.

As a preferred solution: the base includes a base plate and a plurality of side plates vertically arranged on the base plate, and the plurality of side plates encloses a housing cavity, and the above-mentioned locking mechanism is installed in the housing cavity middle.

As a preferred solution: the plurality of cylinders are installed side by side on the outer wall of one of the above-mentioned one side panels.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that the workpiece is pre-positioned by using the pre-positioning device, and then the workpiece is locked and positioned by the pneumatic locking device. , the clamping fixture relies on the action of the cylinder to realize the locking and loosening of the workpiece, and the operation is quick and convenient. Moreover, the overall structure of the clamping fixture is simple, fewer parts are required, and the assembly is quick.

In order to more clearly illustrate the structural features and functions of the utility model, it will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the three-dimensional schematic view of the clamping fixture of the present utility model;

Fig. 2 is a three-dimensional schematic diagram of another angle of view of the clamping fixture of the present invention;

Fig. 3 is an exploded schematic view of the clamping fixture of the present invention;

Figure 4 is an exploded schematic view of the pre-positioning device of the present invention;

Fig. 5 is an exploded schematic diagram of another viewing angle of the pre-positioning device of the present invention;

Figure 6 is an exploded schematic view of the pneumatic locking device of the present invention;

Fig. 7 is an exploded schematic view of the pneumatic locking device of the present invention from another perspective.

Explanation of the accompanying drawings:

10. Pre-positioning device 11. Substrate

111, vertical channel 112, positioning pin

12, support platform 121, through hole

122, fixed groove 123, handle

124. Positioning hole 13. Positioning component

131, fixed seat 132, support column

1321, hook groove 1322, clamping part

133, limit block 1331, gap

20. Pneumatic locking device 21. Base

211, bottom plate 212, side plate

213, accommodation cavity 214, support block

215, baffle plate 216, chute

217, guide rod 22, locking mechanism

221, elastic gripper 222, sliding seat

2221, protruding hole 223, elastic element

23. Cylinder assembly 231. Cylinder

232. Wedge block

30. Workpiece.

detailed description

As shown in Figures 1 to 7, the utility model is a fast type numerical control clamping fixture, which includes a pre-positioning device 10 for pre-positioning the workpiece to be processed and a pneumatic locking device for locking the workpiece to be processed 20, of which:

The pre-positioning device 10 includes a base plate 11, a support table 12 and a plurality of positioning components 13, and a plurality of vertical passages 111 are arranged side by side on the base plate 11; A plurality of through holes 121 are provided, and a fixing groove 122 is respectively provided corresponding to each through hole 121 at the bottom of the support platform 12, and a handle 123 is respectively provided on both sides of the support platform 12; A locating pin 112 in the shape of a locating pin 112 is provided with a locating hole 124 corresponding to the locating pin 112 on the support platform 12 , and the locating pin 112 is inserted into the locating hole 124 .

The plurality of positioning components 13 respectively include a plurality of fixing bases 131, supporting columns 132 and limit blocks 133 pierced on the fixing bases 131, and the fixing bases 131 are installed in the fixing slots 122 at the bottom of the supporting platform 12. The support column 132 can be vertically lifted and installed in the fixed seat 131, and a hook groove 1321 is provided at the lower end of the support column 132; the upper end of the support column 132 passes through the through hole 121 of the support platform 12, and the limit block 133 is detachably installed At the top of the support column 132, a notch 1331 is respectively provided on each limit block 133, and a clamping portion 1322 is respectively provided at the top of each support column 132 corresponding to the notch 1331, and the notch 1331 is detachably matched with the clamping portion 1322 .

The pneumatic locking device 20 includes a base 21, a locking mechanism 22 mounted on the base 21, and a plurality of cylinder assemblies 23 that drive the locking mechanism 22 to act. A plurality of side plates 212 on the bottom plate 211, the plurality of side plates 212 are surrounded to form an accommodating cavity 213; a plurality of supporting blocks 214 are arranged at intervals in the accommodating cavity 213, on the outer walls of both sides of the supporting block 214 A baffle 215 is provided respectively, and a chute 216 is formed around the adjacent supporting blocks 214 and the baffles 215 on both sides.

The locking mechanism 22 is installed in the accommodating cavity 213, which includes a plurality of elastic grippers 221 that match the hooking grooves 1321 of the above-mentioned support column 132 and a plurality of elastic grippers 221 for pulling the elastic grippers 221 to move downward. Sliding seat 222, the plurality of sliding seats 222 can be slidably installed on the base 21 up and down, an elastic element 223 is provided between the bottom of the sliding seat 222 and the base 21, and an extending hole is provided on the side wall of the sliding seat 222 2221 , the lower end of the elastic clamp 221 is vertically installed on the sliding seat 222 , and the upper end of the elastic clamp 221 passes through the above-mentioned vertical channel 111 and is elastically clamped in the above-mentioned hooking groove 1321 .

The plurality of cylinder assemblies 23 respectively include a cylinder 231 and a wedge block 232 installed on the shaft end of the cylinder 231. The plurality of cylinders 231 are installed side by side on the outer wall of one of the side plates 212 of the above-mentioned base 21. The side of the cylinder 231 faces the above-mentioned The sliding seat 222 and the wedge block 232 are telescopically located in the protruding hole 2221 .

In addition, a guide rod 217 is arranged transversely on the base 21 , and the guide rod 217 passes through the plurality of sliding seats 222 transversely.

The working principle of the utility model is as follows: first, the workpiece to be processed is placed on the support column 132, and the limit block 133 is installed on the top of the support column 132 to limit the workpiece; the cylinder 231 drives the wedge block 232 to move forward, and the wedge-shaped The block 232 presses down the sliding seat 222, and the sliding seat 222 drives the elastic gripper 221 to move downwards, and the support column 132 moves down thereupon, so that the limiting block 133 is compressed on the upper end of the workpiece to realize the locking and fixing of the workpiece; When the workpiece is taken down, the cylinder 231 drives the wedge-shaped block 232 to retreat, the sliding seat 222 moves upward under the action of the elastic element 223 below it, drives the elastic gripper 221 to move upward, the support column 132 moves upward accordingly, and the limit block 133 is separated from the workpiece At the top, the stop block 133 is taken off from the support column 132 at this time, and the workpiece can be taken off from the support column 132 .

The key point of the design of the utility model is that the workpiece is pre-positioned by using the pre-positioning device, and then the workpiece is locked and positioned by the pneumatic locking device. The clamping fixture relies on the cylinder to lock and release the workpiece. The operation is quick and convenient, and the overall structure of the clamping fixture is simple, the required parts are few, and the assembly is quick.

The above are only preferred embodiments of the present utility model, and are not intended to limit the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and equivalent changes made to the above embodiments according to the technical essence of the present utility model Modifications still belong to the scope of the technical solution of the utility model.

Claims (10)

1. A kind of 1. fast-type numerical control clamping jig, it is characterised in that：Include for carrying out the pre- of pre-determined bit to workpiece to be processed Positioner and the pneumatic locking device for being locked to workpiece to be processed,

   The device for pre-positioning includes substrate, supporting table and a plurality of positioning components, has been arranged side by side on the substrate a plurality of perpendicular To passage；The supporting table is installed on upper surface of base plate, in being provided with plurality of through holes in supporting table；A plurality of positioning components point Do not include fixed seat and the support column and the detachable limited block for being installed on support top end that are arranged in fixed seat, should Fixed seat is installed on above-mentioned supporting table bottom, the support column can vertical lifting formula be installed in fixed seat, set in support column lower end It is equipped with hook groove；Above-mentioned support column passes through the through hole；

   The retaining mechanism and the plural number of driving retaining mechanism action that the pneumatic locking device includes pedestal and is installed on pedestal Individual cylinder assembly, the retaining mechanism include the elastic tong and be used for that a plurality of hook grooves with above-mentioned support column match Elastic clip is pulled to hand down dynamic a plurality of sliding seats, a plurality of sliding seats can slide up and down formula and be installed on pedestal, in Set and have elastic component between sliding seat bottom and pedestal, stretch out hole, the elastic clip subordinate end in being provided with sliding seat side wall It is vertically arranged on sliding seat, elastic clip is held through above-mentioned vertical passageway resilient clamp in above-mentioned hook groove on hand；The cylinder Component includes cylinder and is installed on the wedge of cylinder shaft end, and the cylinder side surface is right against above-mentioned sliding seat, and wedge can be stretched Contracting formula is located in above-mentioned stretching hole.
2. 2. fast-type numerical control clamping jig according to claim 1, it is characterised in that：The substrate both sides are provided with positioning Pin, is provided with positioning hole, alignment pin is inserted in positioning hole in corresponding to alignment pin in above-mentioned supporting table.
3. 3. fast-type numerical control clamping jig according to claim 2, it is characterised in that：The alignment pin is tapered.
4. 4. fast-type numerical control clamping jig according to claim 1, it is characterised in that：Set respectively on each limited block A breach is equipped with, correspond to breach respectively in each support top end is provided with a holding section, and breach is detachable and the holding section Coordinate.
5. 5. fast-type numerical control clamping jig according to claim 1, it is characterised in that：The supporting table both sides are set respectively There is a handle.
6. 6. fast-type numerical control clamping jig according to claim 1, it is characterised in that：The supporting table bottom is arranged side by side There are a plurality of fixing grooves, above-mentioned a plurality of fixed seats correspond to be installed in fixing groove respectively.
7. 7. fast-type numerical control clamping jig according to claim 1, it is characterised in that：It is arranged at intervals with the pedestal multiple Several support blocks, in being respectively arranged with a baffle plate on the outer wall of support block both sides, adjacent supports block and two side shields enclose and are configured to The chute slided up and down for above-mentioned sliding seat.
8. 8. fast-type numerical control clamping jig according to claim 1, it is characterised in that：One is horizontally arranged with the pedestal Guide rod, the guide rod are horizontally through above-mentioned a plurality of sliding seats.
9. 9. fast-type numerical control clamping jig according to claim 1, it is characterised in that：The pedestal includes bottom plate and erected The plural block side plate on the bottom plate directly is enclosed, the plural block side plate, which encloses, is configured to an accommodating cavity, and above-mentioned retaining mechanism is installed on this In accommodating cavity.
10. 10. fast-type numerical control clamping jig according to claim 9, it is characterised in that：A plurality of cylinders are pacified side by side Loaded on above-mentioned wherein side plate lateral wall.