CN214684425U - A frock clamp for chassis mills face - Google Patents

Abstract

The utility model discloses a tool clamp for chassis face milling, which comprises a four-axis turntable, a plurality of pressure bearing tables, a telescopic sliding assembly, a pressing mechanism and an automatic positioning mechanism, wherein the top surface of the four-axis turntable is provided with the plurality of pressure bearing tables; can directly accomplish the automatic alignment clamping on with the chassis, support tight mode through the centre to both ends and realize the location, when rotatory through the four-axis revolving stage like this, the both ends face of chassis is unanimous with milling cutter's interval, guarantees the depth of parallelism like this, and the clamping speed is faster simultaneously, has submitted the efficiency of processing like this.

Description

A frock clamp for chassis mills face

Technical Field

The utility model relates to a tower machine parts machining equipment field, concretely relates to frock clamp for chassis mills face.

Background

After the welding and assembling of the base of the tower crane are finished, the end face of the base needs to be milled, so that the precision of the two end faces of the base is ensured, the milling of the two faces of the base is finished by two times of processing, namely, the parallelism of the two end surfaces of the base can not be ensured by processing the two end surfaces of the base on the two machine tools, thus the base can not be assembled with other parts when assembling and clamping are carried out, when the clamping is carried out on different machine tools, the clamping difficulty of workers is increased (in the base comparison, the clamping is difficult), in order to ensure the distance between the milling surface and the cutter during clamping, the precision can be ensured, the prior positioning and clamping firstly aligns the positions, then the lower part of the base and the clamping mechanism are aligned and clamped, so that the clamping speed is low, and the processing efficiency is reduced.

Disclosure of Invention

The utility model provides a not enough to above-mentioned prior art, the utility model provides a frock clamp for chassis mills face can be directly with accomplishing the automatic alignment clamping on the chassis, supports tight mode through the centre to both ends and realizes fixing a position, when rotatory through the four-axis revolving stage like this, the both ends face of chassis is unanimous with milling cutter's interval, guarantees the depth of parallelism like this, and the efficiency of processing has been submitted like this to the fast of clamping speed comparison simultaneously.

In order to achieve the above purpose, the utility model discloses a scheme: a frock clamp for milling the face of an underframe comprises a four-axis turntable, a bearing table, a telescopic sliding assembly, a pressing mechanism and an automatic positioning mechanism, wherein a plurality of bearing tables are arranged on the top surface of the four-axis turntable, the bottom of the underframe is placed on the bearing table, a limit stop is arranged on the four-axis turntable, the limit stop is arranged on the four-axis turntable and is arranged on the four-axis turntable outside the bearing table, the telescopic sliding assembly is arranged on the bearing table and can ascend and descend, the underframe can easily move on the telescopic sliding assembly, the pressing mechanism is arranged on one side of each bearing table, the underframe is pressed on the bearing table through the pressing mechanism, the pressing mechanism is linked with the telescopic sliding assembly, and when the pressing mechanism presses the underframe, the telescopic sliding assembly descends to realize the abdication of the underframe; the automatic positioning mechanism is arranged on the four-axis turntable between the plurality of pressure bearing tables, and the automatic positioning mechanism is used for positioning and clamping the upper chassis and the lower chassis in a manner that two ends of the automatic positioning mechanism are abutted tightly, so that the clamping precision is ensured.

Preferably, the automatic positioning mechanism comprises guide sleeves, push rods, electric jacks and pulleys, wherein a plurality of pairs of coaxial guide sleeves are arranged on the four-axis rotary table, a push rod which moves along the guide sleeves is arranged in each guide sleeve, the pulley is arranged at the tail end of each push rod, the electric jacks are fixed between the two opposite push rods in a hinged mode, and the positioning of the underframe is realized through the contraction and expansion of the electric jacks.

Preferably, the telescopic sliding assembly comprises a mounting seat, sliding wheels, a belt and a lifting assembly, a gap embedded into the mounting seat is formed in the pressure bearing table, a plurality of groups of the sliding wheels are fixed to the top of the mounting seat through bearings and arranged side by side, the belt is sleeved on the sliding wheels, the lifting assembly is arranged between the mounting seat and the peripheral main rotating table, and the telescopic sliding assembly is lowered through the lifting assembly.

Preferably, the pressing mechanism comprises a hydraulic cylinder and a pressing block, wherein the hydraulic cylinder is fixed on the four-axis turntable, the piston rod of the hydraulic cylinder is hinged with the pressing block, the middle section of the pressing block is hinged with a linkage rod, the linkage rod is hinged on the cylinder body of the hydraulic cylinder, and a pressure sensor is arranged below the tail end of the pressing block and connected with the lifting assembly.

Compared with the prior art, the utility model has the advantages of: 1. can directly accomplish the automatic alignment clamping on with the chassis, support tight mode through the centre to both ends and realize the location, when rotatory through the four-axis revolving stage like this, the both ends face of chassis is unanimous with milling cutter's interval, guarantees the depth of parallelism like this, and the clamping speed is faster simultaneously, has submitted the efficiency of processing like this.

Drawings

Fig. 1 is a top view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a schematic view of the automatic positioning mechanism of the present invention.

The device comprises a four-axis turntable 1, a four-axis turntable 1.1, limit stops 2, a pressure-bearing table 2.1, a telescopic sliding assembly 2.2, a mounting seat 2.3, a sliding wheel 2.4, a belt 2.5, a lifting assembly 3, a pressing mechanism 3.1, a hydraulic cylinder 3.2, a pressing block 3.3, a linkage rod 3.4, a pressure sensor 4, an automatic positioning mechanism 4.1, a guide sleeve 4.2, a push rod 4.3, an electric jack 4.4 and a pulley.

Detailed Description

The present invention will now be further elucidated with reference to the accompanying drawings.

As shown in fig. 1-3, a tooling fixture for face milling of an underframe comprises a four-axis turntable 1, a pressure-bearing table 2, a telescopic sliding assembly 2.1, a pressing mechanism 3 and an automatic positioning mechanism 4, wherein a plurality of pressure-bearing tables 2 are fixed on the top surface of the four-axis turntable 1 (i.e. capable of rotating) in a bolt fastening manner, the top surface of each pressure-bearing table 2 is in contact with the bottom of a base (i.e. the bottom of the underframe is pressed on the top surface of the pressure-bearing table 2), the bottom of the underframe is placed on the pressure-bearing table 2, limit stoppers 1.1 are fixed on the left side and the right side of the four-axis turntable 1 in a bolt fastening manner, the limit stoppers 1.1 are arranged on the four-axis turntable 1 outside the pressure-bearing tables 2, the inner side surface of the limit stoppers 1.1 is an inclined surface which is inclined inward, the underframe slides to the upper side of the pressure-bearing table 2 along the inclined surface, a telescopic sliding assembly 2.1 is embedded in the pressure-bearing table 2, and the telescopic sliding assembly 2.1 ascends and descends, meanwhile, the underframe can easily move on the telescopic sliding assembly 2.1, when the telescopic sliding assembly 2.1 is ejected out, the telescopic sliding assembly 2.1 is higher than the top of the pressure-bearing table 2, so that the underframe is placed on the telescopic sliding assembly 2.1, the underframe can easily slide on the telescopic sliding assembly 2.1 through the telescopic sliding assembly 2.1, and the positioning is convenient; a pressing mechanism 3 is fixed on one side of each pressure bearing table 2 in a bolt fastening mode, the bottom frame is pressed on the pressure bearing tables 2 through the pressing mechanism 3, the pressing mechanism 3 is linked with a telescopic sliding assembly 2.1, when the pressing mechanism 3 presses the bottom frame, the telescopic sliding assembly 2.1 descends to realize abdication of the bottom frame, and therefore fixation of the bottom frame after positioning is realized; the mode of bung bolt-up is fixed with automatic positioning mechanism 4 on four-axis revolving stage 1 between polylith bearing platform 2, wherein automatic positioning mechanism 4 supports the location and the clamp of chassis about tight mode through both ends, guarantee the precision of clamping like this, realize the location of chassis front and back position through the mode that automatic positioning mechanism 4 promoted to both sides, realize fixing a position the position of chassis both sides through limit baffle, it is relatively quick to fix a position like this, need not the manual work and operate when fixing a position simultaneously, guarantee the interval between chassis front and back both sides and the cutter simultaneously, guarantee the depth of parallelism of chassis both sides face.

The automatic positioning mechanism 4 comprises a guide sleeve 4.1, a push rod 4.2, an electric jack 4.3 and a pulley 4.4, wherein a plurality of pairs of coaxial guide sleeves 4.1 are fixed on the four-axis turntable 1 in a welding mode (each guide sleeve 4.1 is fixed on the four-axis turntable 1 in a welding bracket mode), the push rod 4.2 moving along the guide sleeve 4.1 is inserted in each guide sleeve 4.1, the pulley 4.4 is fixed at the tail end of each push rod 4.2 through a bearing and is contacted with the inner side surface of the bottom plate, the bottom frame is positioned by outward movement of the push rod 4.2, the electric jack 4.3 (purchased) is fixed between the two opposite push rods 4.2 in a hinged mode, the electric jack 4.3 (purchased is the electric jack 4.3, and comprises two threaded sleeves, a two-way screw rod, a connecting rod and a stepping motor, and the stepping motor are welded and fixed with the two-way screw rod, the stepping motor is fixed on the four-axis rotary table through bolts, two sections of bolt sleeves of the bidirectional screw rod are sleeved with corresponding threaded sleeves, two symmetrical connecting rods are hinged to the two threaded sleeves, the tail ends of the connecting rods are hinged to the push rod respectively), and the bottom frame is positioned by contraction and expansion, namely when the electric jack is jacked by 4.3, the push rod is expanded outwards by 4.2, so that when the positioning is carried out, the push rod 4.2 pushes the bottom frame to be positioned, the positioning is realized by jacking towards two sides in the middle, the positioning is rapid, the distance between the front end face and the rear end face of the bottom frame and a cutter is ensured, and the parallelism is ensured.

The telescopic sliding component 2.1 comprises a mounting seat 2.2, sliding wheels 2.3, a belt 2.4 and a lifting component 2.5, a gap embedded into the mounting seat 2.2 is formed in the pressure bearing platform 2, a plurality of groups of sliding wheels 2.3 are arranged side by side at the top of the mounting seat 2.2 through bearings, the belt 2.4 is sleeved on the sliding wheels 2.3, wherein the lifting component 2.5 is arranged between the mounting seat 2.2 and the surrounding main rotary table (the lifting component 2.5 is a lifting hydraulic cylinder 3.1, the cylinder body of the lifting hydraulic cylinder 3.1 is fixed on the four-axis rotary table 1 through an embedded mode, the piston rod of the lifting hydraulic cylinder 3.1 is fixed below the mounting seat 2.2 through a welding mode, the lifting and descending of the mounting seat 2.2 are realized through the stretching of the lifting hydraulic cylinder 3.1, so that the top of the belt 2.4 is higher than or lower than the top of the pressure bearing platform 2), can prevent like this that hold-down mechanism 3 from pressing flexible sliding component 2.1 when compressing tightly the chassis bad, also can avoid simultaneously in processing, the chassis removes through flexible sliding component 2.1.

The pressing mechanism 3 comprises a hydraulic cylinder 3.1 and a pressing block 3.2, wherein the hydraulic cylinder 3.1 is fixed on the four-axis turntable 1 in a bolt fastening mode, the pressing block 3.2 is hinged on a piston rod of the hydraulic cylinder 3.1, a linkage rod 3.3 is hinged on the middle section of the pressing block 3.2, the linkage rod 3.3 is hinged on a cylinder body of the hydraulic cylinder 3.1, a pressure sensor 3.4 (CCPS 18) is fixed below the tail end of the pressing block 3.2 in an embedding mode, the pressure sensor 3.4 is connected with a lifting assembly 2.5, when the bottom of the pressing block 3.2 contacts with the chassis, the lifting assembly 2.5 quickly lowers the telescopic sliding assembly 2.1, the bottom of the chassis is pressed on the pressure bearing table 2, the chassis is pressed by the pressing mechanism 3 to realize fixation, so that a workpiece can not shake and shift when the face milling is carried out, and the workpiece is pressed by the rotation mode of the mounting block to realize the pressing, therefore, the chassis can be conveniently clamped and disassembled, and the clamping and disassembling efficiency is improved.

The utility model discloses mainly fix a position to the mode that both ends promoted through the centre, when fixing a position, through flexible slip subassembly 2.1 when can be convenient for the chassis, be convenient for fix a position like this, compress tightly pressing from both sides through the mode that compresses tightly, prevent like this that the work piece from taking place the shake, guarantee the machining precision like this.

Claims (4)

1. A frock clamp for face milling of an underframe comprises a four-axis turntable, a bearing table, a telescopic sliding assembly, a pressing mechanism and an automatic positioning mechanism, wherein a plurality of bearing tables are arranged on the top surface of the four-axis turntable, the bottom of the underframe is placed on the bearing table, a limit stop is arranged on the four-axis turntable, and the limit stop is arranged on the four-axis turntable and is arranged on the four-axis turntable outside the bearing table; the automatic positioning mechanism is arranged on the four-axis turntable between the plurality of pressure bearing tables, and the automatic positioning mechanism is used for positioning and clamping the upper chassis and the lower chassis in a manner that two ends of the automatic positioning mechanism are abutted tightly, so that the clamping precision is ensured.

2. The tooling clamp for face milling of the underframe as recited in claim 1, wherein the automatic positioning mechanism comprises a plurality of pairs of coaxial guide sleeves, a plurality of pairs of coaxial guide sleeves are arranged on the four-axis turntable, a push rod moving along the guide sleeves is arranged in each guide sleeve, a pulley is arranged at the tail end of each push rod, the electric jack is fixed between two opposite push rods in a hinged manner, and the underframe is positioned by contraction and expansion of the electric jack.

3. The tooling fixture for face milling of the underframe as claimed in claim 2, wherein the telescopic sliding assembly comprises a mounting seat, sliding wheels, a belt and a lifting assembly, a gap for embedding the mounting seat is formed in the pressure bearing table, a plurality of groups of sliding wheels are fixed on the top of the mounting seat through bearings and arranged side by side, the belt is sleeved on the plurality of sliding wheels, the lifting assembly is arranged between the mounting seat and the surrounding main rotary table, and the telescopic sliding assembly is lowered through the lifting assembly.

4. The tool clamp for the face milling of the underframe as claimed in claim 3, wherein the pressing mechanism comprises a hydraulic cylinder and a pressing block, the hydraulic cylinder is fixed on the four-axis turntable, the pressing block is hinged to a piston rod of the hydraulic cylinder, a linkage rod is hinged to the middle section of the pressing block and hinged to a cylinder body of the hydraulic cylinder, and a pressure sensor is arranged below the tail end of the pressing block and connected with the lifting assembly.

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