CN211305530U

CN211305530U - Split type expansion clamping device

Info

Publication number: CN211305530U
Application number: CN201921860785.4U
Authority: CN
Inventors: 庄重; 李海滨; 张红梅; 何勇; 李娜
Original assignee: Liaoshen Industrial Group Co ltd
Current assignee: Liaoshen Industrial Group Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-08-21
Anticipated expiration: 2029-10-31

Abstract

The utility model provides a split type clamping device that rises belongs to processing technology field, for one kind can expand, the great split type spring that rises of shrink range. The split type expansion clamp device comprises an expansion spring clack, a limiting ring, a baffle plate and a screw; the split type expansion spring can reduce the size processing precision of the positioning hole in batch processing, and the processing cost is reduced. The expansion and contraction range is increased to adapt to more inner hole sizes. When in tensioning, the split structure can obtain larger clamping force without worrying about the expansion of the tension spring.

Description

Split type expansion clamping device

Technical Field

The utility model belongs to the technical field of the processing, involve big batch machine parts processing, utilize the frock design of hole clamping location, wherein the frock structural design of spring that rises.

Background

In order to quickly clamp and position during processing of large-batch parts, a special tool clamp is adopted. When the inner hole is used for clamping and positioning, the tension spring (shown in figure 1) is mostly adopted for clamping. The structure formula ring as an organic whole of spring rises, and the fluting produces the effect that rises, contracts on the face of cylinder, but the contraction range of spring that rises is between 0.1 ~ 0.3mm, and it is inseparabler that the clamp force is big more with the laminating of part hole when rising, and the clamping effect is just better. Due to the fact that the shrinkage range of the integrated expansion spring is too small, the size processing requirement of the inner hole of the part is high. The size of the inner hole is too large, the tension force is not enough, and parts are easy to loosen when cutting and machining are carried out; if the size of the inner hole is too small, the expansion spring cannot be embedded into the inner hole.

The utility model has the following contents:

the utility model provides a split type clamping device that rises is the split type spring that rises that can expand, shrink range is great.

The technical scheme of the utility model is that:

a split type clamping device that rises, characterized by, including rising the reed petal, spacing ring, back plate, screw; the spring expanding petals are provided with three petals which are combined into a ring; after the expansion spring valve and the three valves are combined, an inner hole is a conical hole, the baffle comprises three valves, and the three valves are combined into a ring; the radian of each petal of the baffle plate is the same as that of each expansion spring petal; the inner diameter is the same as the inner diameter of the expansion spring petal on the side of the installation baffle plate; the outer diameter is smaller than that of the expansion spring petals; each petal of the baffle is fixedly connected with the corresponding expanding reed petal; the limiting ring is located between the baffle and the expansion reed petals and is annular, and the outer diameter of the limiting ring is smaller than that of the expansion reed petals.

Further, after the baffle plate and the expansion spring petals are fixed, a groove for accommodating the limiting ring is formed in the periphery of the baffle plate, and the limiting ring is placed.

Further, the baffle plate is connected with the expansion spring clack through a screw.

Furthermore, the conical hole after the expansion reed petal three-combination is matched with the body, the front end of the body is conical and is positioned in the conical hole after the three-petal expansion reed petal combination, and the body is provided with a step end face attached to the baffle.

Further, the baffle plate and the expansion spring clack are fixedly connected through hexagon socket head cap screws.

Furthermore, the spring leaf expansion three-petal combination device further comprises a pull rod, the front end of the pull rod is located on the outer side of the front end of the spring leaf expansion three-petal combination, and the rear end of the pull rod penetrates through the spring leaf expansion three-petal combination and the center hole of the body.

Furthermore, the front end surface of the expansion reed petal combination has a groove for accommodating the front end of the pull rod, and the front end of the pull rod is positioned in the groove.

Furthermore, the diameter of the front end of the pull rod is larger than the maximum inner diameter of the conical hole after the expansion reed petal and the three petals are combined.

Divide into three with the integral type spring that rises, become three lamella (get rid of the fluting structure), increase baffle and spacing collar, utilize split type structure to increase the range that rises, contracts, utilize spacing collar and baffle to guarantee to rise the integrative nature of spring.

The technical effects of the utility model are that:

the split type expansion spring can reduce the size processing precision of the positioning hole in batch processing, and the processing cost is reduced. The expansion and contraction range is increased to adapt to more inner hole sizes. When in tensioning, the split structure can obtain larger clamping force without worrying about the expansion of the tension spring.

Drawings

Fig. 1-1 and fig. 1-2 are front and left views of the conventional expanding and clamping device, respectively.

Fig. 2-1 and fig. 2-2 are a front view and a left view of a split type expanding and clamping device of the present invention, respectively.

Fig. 3 is a schematic view of the usage state of the device of the present invention.

Detailed Description

Referring to fig. 2-1 and 2-2, a split type expanding clamp device comprises an expanding spring clack 1, a limiting ring 2, a baffle plate 3 and an inner hexagon screw 4.

The spring expanding valve has three valves combined into a ring.

The baffle 3 comprises three petals which are combined into a ring; each petal of the baffle 3 has the same arc as each expanding spring petal. The inner diameter is the same as that of the spring expansion flap on the side of the mounting baffle plate; the outer diameter is smaller than that of the expansion spring petals. Each petal of the baffle 3 is fixedly connected with the corresponding expanding reed petal.

The limiting ring is positioned between the baffle plate 3 and the expansion spring clacks. The spacing ring is annular. The outer diameter is smaller than that of the expansion spring petals.

After the baffle 3 is fixed with the expanding spring clacks, a groove for accommodating the limiting ring is formed in the periphery of the baffle.

After the expansion reed petals are combined, the inner hole is a conical hole which is matched with the body 5.

The function and the using process of the body 5 and the pull rod are the same as those of the existing expanding and clamping device.

Application process

As shown in fig. 3, the working schematic diagram of the split type expansion clamping device is that the expansion spring clack 1, the limiting ring 2, the baffle 3 and the socket head cap screw 4 are assembled in advance to form the split type expansion clamping device, the pull rod 6, the split type expansion clamping device and the body 5 are sequentially sleeved and connected, the inner hole of the part 7 is sleeved on the split type expansion clamping device, the pull rod 6 is tensioned rightwards, and the split type expansion clamping device is expanded due to the inclined plane effect, and the part is clamped.

Claims

1. A split type clamping device that rises, characterized by, including rising reed lamella (1), spacing ring (2), back plate (3), screw;

the spring expanding petals are provided with three petals which are combined into a ring; after the expansion reed petals are combined, the formed inner hole is a conical hole,

the baffle comprises three petals which are combined into a ring; the radian of each petal of the baffle plate is the same as that of each expansion spring petal; the inner diameter is the same as the inner diameter of the expansion spring petal on the side of the installation baffle plate; the outer diameter is smaller than that of the expansion spring petals; each petal of the baffle is fixedly connected with the corresponding expanding reed petal;

the limiting ring is located between the baffle and the expansion reed petals and is annular, and the outer diameter of the limiting ring is smaller than that of the expansion reed petals.

2. The split expanding and clamping device as claimed in claim 1, wherein the retaining plate is fixed to the expanding spring plate, and a groove for receiving the limiting ring is formed on the outer periphery of the retaining plate, and the limiting ring is placed in the groove.

3. The split clamping device according to claim 1, wherein the baffle plate is connected with the tension spring petal through screws.

4. The split expanding clip device according to claim 1, wherein the conical hole of the expanding spring petal is matched with the body, the front end of the body is conical and is located in the conical hole of the expanding spring petal, and the body is provided with a step end face which is jointed with the baffle.

5. The split clamping device according to claim 1, wherein the baffle plate and the tension spring petal are fixedly connected through hexagon socket head cap screws.

6. The split clamping device according to claim 1, further comprising a pull rod, wherein the front end of the pull rod is located outside the front end of the spring-leaf three-petal combination, and the rear end of the pull rod passes through the spring-leaf three-petal combination and the central hole of the body.

7. The split clamping device as claimed in claim 6, wherein the front end face of the expansion spring petal after three-petal combination has a groove for receiving the front end of the pull rod, and the front end of the pull rod is located in the groove.

8. The split clamping device according to claim 6, wherein the diameter of the front end of the pull rod is larger than the maximum inner diameter of the conical hole after the spring-expanding petal three-petal combination.