CN109176094B

CN109176094B - Clamping and positioning structure for workpiece

Info

Publication number: CN109176094B
Application number: CN201811350931.9A
Authority: CN
Inventors: 郑微丹
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-14
Filing date: 2018-11-14
Publication date: 2020-10-02
Anticipated expiration: 2038-11-14
Also published as: CN109176094A

Abstract

The invention discloses a clamping and positioning structure for a workpiece, which comprises a connecting seat and a positioning support arranged on the connecting seat, wherein the positioning support is provided with a clamping and pressing structure, the clamping and pressing structure comprises a clamping and pressing seat and a cavity arranged on the side surface of the clamping and pressing seat, a workpiece bearing disc is arranged in the center of the cavity, a hydraulic connecting rod is fixed in the center of the back surface of the clamping and pressing seat, a chute with an inverted T-shaped section is uniformly fixed on the outer wall of the clamping and pressing seat, an inverted T-shaped sliding block is arranged in the chute, a C-shaped clamping block is uniformly fixed on the cavity wall of the cavity, a V-shaped locking block is arranged on the inner wall of the cavity, a vacuum chuck is fixed in the center of the workpiece bearing disc, a vacuumizing machine is fixed on the connecting seat, a hydraulic cylinder is fixed on the connecting seat, and the hydraulic cylinder is. The clamping and fixing device has the advantages of reasonable structure arrangement, convenience and quickness in operation, stable and reliable use, strong applicability and good practicability, and can clamp, press and fix workpieces synchronously in moving.

Description

Clamping and positioning structure for workpiece

Technical Field

The invention belongs to the technical field of workpiece processing, and particularly relates to a clamping and positioning structure for a workpiece.

Background

As a machining industry, especially in the machining process of a bevel gear machine, the situation that one-time clamping and positioning are needed to process as many machined surfaces as possible is often met, the auxiliary time is shortened to improve the machining efficiency, the positioning and clamping times are reduced to improve the quality precision of the machined parts, and meanwhile, the tool is required to be compact, simple, efficient and small in size as much as possible to reduce the influence on the quality stability of a machine tool spindle. Therefore, research and development a simple and easy, high-efficient, the elasticity is quick, compress tightly firm, loading and unloading part is convenient, the novel simple and easy high-efficient compact structure of raise the efficiency and precision is very practical, chinese patent application 201711038008.7 discloses a novel compact structure, and it can realize the nip pressure operation, but its stability in use is very limited, is difficult to guarantee the reliable and stable nature of nip pressure moreover, so suitability and practicality receive the restriction.

Disclosure of Invention

The invention aims to provide a clamping and positioning structure for workpieces, which is reasonable in structural arrangement and high in applicability.

The technical scheme for realizing the purpose of the invention is that the clamping and positioning structure for the workpiece comprises a connecting seat and a positioning support arranged on the connecting seat, wherein the positioning support is provided with a clamping and pressing structure, the clamping and pressing structure comprises a clamping and pressing seat and a concave cavity arranged on the side surface of the clamping and pressing seat, a workpiece bearing disc is arranged at the center of the concave cavity, a hydraulic connecting rod is fixed at the center of the back surface of the clamping and pressing seat, the hydraulic connecting rod penetrates through the center of the concave cavity and is connected with the workpiece bearing disc, a sliding chute with an inverted T-shaped cross section is uniformly fixed on the outer wall of the clamping and pressing seat, an inverted T-shaped sliding block is arranged in the sliding chute, a C-shaped clamping block is uniformly fixed on the cavity wall of the concave cavity, the middle part of the C-shaped clamping block is connected on the cavity wall of the concave cavity through a movable shaft, and the end part of the C-, the sliding block moves in the sliding groove and is positioned through a locking screw, a V-shaped locking pressing block is arranged on the inner wall of the cavity, the corner of the V-shaped locking pressing block is connected to the inner wall of the cavity through a rotating shaft, the end portion of the V-shaped locking pressing block is connected to the edge of a workpiece bearing disc through a shaft rod, a vacuum chuck is fixed at the center of the workpiece bearing disc, a vacuumizing machine is fixed on the connecting seat and is connected with the vacuum chuck, a hydraulic cylinder is fixed on the connecting seat and is connected with the end portion of the hydraulic connecting rod.

And a guide sliding groove is formed in the inner wall of the concave cavity, and a guide convex strip matched with the guide sliding groove is fixed on the edge of the workpiece bearing disc.

A transmission screw rod is arranged in the sliding groove, an operation hand wheel connected with the transmission screw rod is fixed on the side part of the clamping and pressing seat, and the sliding block is in threaded connection with the transmission screw rod.

The C-shaped clamping block is a stainless steel plate with the thickness of 1-3 mm, and adjacent sliding blocks are connected through arc-shaped synchronous rib plates.

Be fixed with the rotating electrical machines on the locating support be fixed with drive gear on the main shaft of rotating electrical machines be provided with cylinder hydraulic pressure mount pad on the locating support, cylinder hydraulic pressure mount pad passes through the bearing and connects on the locating support the surface of cylinder hydraulic pressure mount pad is provided with the tooth's socket, drive gear with the tooth's socket of cylinder hydraulic pressure mount pad is engaged with, the pneumatic cylinder is fixed in the cylinder hydraulic pressure mount pad.

The V-shaped locking pressing block is a stainless steel body, and an anti-skid groove is fixed on the clamping and pressing surface.

The vacuum extractor is characterized in that a power supply interface and a switch panel are arranged on the connecting seat, and a rotating motor control button, a vacuumizing machine start-stop button and a hydraulic cylinder control switch are arranged on the switch panel.

The invention has the positive effects that: the clamping device is reasonable in structure arrangement and convenient and fast to operate, the C-shaped clamping block is matched with the sliding block, the workpiece can be preliminarily clamped and positioned, then the V-shaped locking block rotates around the shaft rod when the workpiece bearing disc moves, clamping and fixing of the workpiece are completed in the moving synchronization, and meanwhile, the vacuum chuck is arranged, so that the workpiece can be guaranteed to move synchronously when the workpiece bearing disc moves, and the clamping device is stable and reliable to use, high in applicability and good in practicability.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

(example 1)

Fig. 1 shows an embodiment of the present invention, wherein fig. 1 is a schematic structural diagram of the present invention.

Referring to fig. 1, a clamping and positioning structure for a workpiece comprises a connecting seat 1 and a positioning support 2 arranged on the connecting seat, wherein a clamping and pressing structure 3 is arranged on the positioning support, the clamping and pressing structure 3 comprises a clamping and pressing seat 31 and a cavity 32 arranged on the side surface of the clamping and pressing seat 31, a workpiece bearing disc 33 is arranged at the center of the cavity, a hydraulic connecting rod 34 is fixed at the center of the back surface of the clamping and pressing seat 31, the hydraulic connecting rod penetrates through the center of the cavity and is connected with the workpiece bearing disc, a chute 4 with an inverted T-shaped cross section is uniformly fixed on the outer wall of the clamping and pressing seat 31, an inverted T-shaped sliding block 5 is arranged in the chute, a C-shaped clamping block 6 is uniformly fixed on the cavity wall of the cavity, the middle part of the C-shaped clamping block is connected to the cavity wall of the cavity through a movable shaft 7, and the end part of the C-shaped clamping block is connected to the sliding block, the slider is in remove in the spout and fix a position through a lock screw rod 9 be provided with V-arrangement locking briquetting 10 on the inner wall of cavity, the corner of V-arrangement locking briquetting is connected on the inner wall of cavity through rotation axis 11 and the tip of V-arrangement locking briquetting is connected on the border that the work piece bore the disc through axostylus axostyle 12 the center that the work piece bore the disc is fixed with vacuum chuck 13 be fixed with evacuation machine 14 on the connecting seat, the evacuation machine with vacuum chuck is connected be fixed with pneumatic cylinder 15 on the connecting seat, the pneumatic cylinder with the tip of hydraulic pressure connecting rod is connected. When the clamping device is used, the position of the C-shaped clamping block is adjusted firstly, so that the C-shaped clamping block can be preliminarily clamped on the surface of a workpiece, the workpiece is preliminarily positioned, the condition of deflection is prevented, then the end edge of the workpiece is adsorbed on the workpiece bearing disc through the vacuum chuck, the hydraulic cylinder is started, the workpiece bearing disc moves, and the V-shaped locking pressing block is clamped and pressed on the surface of the workpiece to be positioned and fixed.

A guide sliding groove 16 is arranged on the inner wall of the concave cavity, and a guide convex strip 17 matched with the guide sliding groove is fixed on the edge of the workpiece bearing disc.

A transmission screw rod 18 is arranged in the sliding groove, an operation hand wheel 19 connected with the transmission screw rod is fixed on the side part of the clamping and pressing seat, and the sliding block is connected to the transmission screw rod in a threaded mode.

The C-shaped clamping block is a stainless steel plate with the thickness of 1-3 mm, and adjacent sliding blocks are connected through arc-shaped synchronous rib plates. And the arc-shaped synchronous rib plates are arranged, so that all the sliding blocks can synchronously move only by moving one sliding block.

The positioning support is fixedly provided with a rotating motor 21, a driving gear 22 is fixedly arranged on a main shaft of the rotating motor, a cylindrical hydraulic installation seat 23 is arranged on the positioning support and is connected to the positioning support through a bearing 24, a tooth groove 25 is formed in the surface of the cylindrical hydraulic installation seat, the driving gear is meshed with the tooth groove of the cylindrical hydraulic installation seat, and the hydraulic cylinder is fixedly arranged in the cylindrical hydraulic installation seat.

The connecting seat is provided with a power interface 26 and a switch panel 20, and the switch panel is provided with a rotating motor control button, a vacuumizing machine start-stop button and a hydraulic cylinder control switch.

The clamping device is reasonable in structure arrangement and convenient and fast to operate, the C-shaped clamping block is matched with the sliding block, the workpiece can be preliminarily clamped and positioned, then the V-shaped locking block rotates around the shaft rod when the workpiece bearing disc moves, clamping and fixing of the workpiece are completed in the moving synchronization, and meanwhile, the vacuum chuck is arranged, so that the workpiece can be guaranteed to move synchronously when the workpiece bearing disc moves, and the clamping device is stable and reliable to use, high in applicability and good in practicability.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.

Claims

1. The utility model provides a press from both sides and press location structure for work piece, includes the connecting seat, sets up locating support on the connecting seat be provided with press from both sides and press structure, its characterized in that on the locating support: the clamping and pressing structure comprises a clamping and pressing seat and a cavity arranged on the side face of the clamping and pressing seat, a workpiece bearing disc is arranged at the center of the cavity, a hydraulic connecting rod is fixed at the center of the back face of the clamping and pressing seat, penetrates through the center of the cavity and is connected with the workpiece bearing disc, a chute with an inverted T-shaped cross section is uniformly fixed on the outer wall of the clamping and pressing seat, an inverted T-shaped sliding block is arranged in the chute, a C-shaped clamping block is uniformly fixed on the cavity wall of the cavity, the middle of the C-shaped clamping block is connected on the cavity wall of the cavity through a movable shaft, the end part of the C-shaped clamping block is connected on the sliding block through a pin shaft, the sliding block moves in the chute and is positioned through a locking screw rod, a V-shaped locking block is arranged on the inner wall of the cavity, the corner of the V-shaped locking block is connected on the inner wall of the cavity through a rotating shaft, and the The rod is connected to the edge of a workpiece bearing disc, a vacuum chuck is fixed in the center of the workpiece bearing disc, a vacuumizing machine is fixed on the connecting seat and connected with the vacuum chuck, and a hydraulic cylinder is fixed on the connecting seat and connected with the end part of the hydraulic connecting rod; a guide sliding groove is formed in the inner wall of the concave cavity, and a guide convex strip matched with the guide sliding groove is fixed on the edge of the workpiece bearing disc; a transmission screw rod is arranged in the sliding groove, an operation hand wheel connected with the transmission screw rod is fixed on the side part of the clamping seat, and the sliding block is in threaded connection with the transmission screw rod; the C-shaped clamping block is a stainless steel plate with the thickness of 1-3 mm, and adjacent sliding blocks are connected through an arc-shaped synchronous rib plate; be fixed with the rotating electrical machines on the locating support be fixed with drive gear on the main shaft of rotating electrical machines be provided with cylinder hydraulic pressure mount pad on the locating support, cylinder hydraulic pressure mount pad passes through the bearing and connects on the locating support the surface of cylinder hydraulic pressure mount pad is provided with the tooth's socket, drive gear with the tooth's socket of cylinder hydraulic pressure mount pad is engaged with, the pneumatic cylinder is fixed in the cylinder hydraulic pressure mount pad.

2. The nip-press positioning structure for workpieces according to claim 1, characterized in that: the V-shaped locking pressing block is a stainless steel body, and an anti-skid groove is fixed on the clamping and pressing surface.

3. A nip-press positioning structure for workpieces according to claim 2, characterized in that: the vacuum extractor is characterized in that a power supply interface and a switch panel are arranged on the connecting seat, and a rotating motor control button, a vacuumizing machine start-stop button and a hydraulic cylinder control switch are arranged on the switch panel.