CN212310922U

CN212310922U - Boring clamp

Info

Publication number: CN212310922U
Application number: CN202021034697.1U
Authority: CN
Inventors: 李凌; 尹波; 张成令; 杜军
Original assignee: Dufu Suzhou Industrial Equipment Manufacturing Co ltd
Current assignee: Dufu Suzhou Industrial Equipment Manufacturing Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2021-01-08
Anticipated expiration: 2030-06-08

Abstract

The utility model discloses a bore hole anchor clamps mainly comprises fixture and supplementary guiding mechanism, and fixture is including installing 3 at least soft claws on the chuck, its characterized in that: supplementary guiding mechanism includes internal stay hexagonal ring and 3 at least adjusting screw, and internal stay hexagonal ring has six sides that regular hexagon distributes, and the centre of every side is equipped with an adjusting screw hole, adjusting screw install with among the adjusting screw hole that soft claw position corresponds, adjusting screw one end and internal stay hexagonal ring threaded connection, the other end is located outside the internal stay hexagonal ring, as the location end of soft claw. The utility model discloses an internal stay hexagonal ring is assisted with adjusting screw, can replace multiple not unidimensional metal ring, and the weight and the kind of the anchor clamps that significantly reduce anchor clamps cost of manufacture, and administrative cost can reduce the material volume of getting rid of soft claw when the soft claw of smart boring, reduces the process time of the soft claw of smart boring to increase the life of soft claw because the volume of getting rid of soft claw is little.

Description

Boring clamp

Technical Field

The utility model relates to a anchor clamps for bore hole equipment, concretely relates to can conveniently realize bore hole anchor clamps of anchor clamps adjustment location.

Background

When the machine tool needs to clamp an excircle in semi-finish machining and finish machining, the machine tool precisely bores the needed soft claw according to the diameter of the excircle of the part to clamp the part. In order to finish boring the soft claw, the conventional operation is that a metal circular ring with a proper excircle diameter is selected, the metal circular ring is clamped by the soft claw, the soft claw is subjected to finish boring, therefore, the clamping concentricity of the soft claw is ensured, after the finish boring is finished, the soft claw is loosened, the metal circular ring is taken down, and then a part is clamped for processing.

A common machine tool is provided with a hydraulic or pneumatic chuck, a soft claw is driven by an oil cylinder or an air cylinder to contract, clamp or expand, and due to the limitation of the stroke of the air cylinder and the oil cylinder, when parts with different outer circle diameters are machined, the installation position of the soft claw is usually required to be manually adjusted, and then a corresponding metal ring is selected, so that a plurality of metal rings with different sizes are required to be provided. This solution has the following drawbacks: (1) a large number of metal rings with different sizes are arranged, so that the manufacturing cost and the management cost of the clamp are increased; (2) the large-size metal ring has overlarge weight, is inconvenient to operate when in use and has potential safety hazards; (3) the diameter difference between adjacent rings in the metal ring series is large, the material removing amount and the processing time during fine boring of the soft claws are increased, and the material removing amount is increased to reduce the service life of the soft claws because the removable amount of each set of soft claws is limited; (4) frequent replacement of the metal rings increases the preparation time for fine boring of the soft jaws.

Accordingly, there is a need for an improved boring jig to solve the above problems.

Disclosure of Invention

The utility model aims at providing a bore hole anchor clamps, through structural improvement, reduce the material removal volume when the soft claw of smart boring each time, simplify the operation process, accelerate the speed of preparation.

In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows: the utility model provides a bore hole anchor clamps mainly comprises fixture and supplementary guiding mechanism, fixture is including installing 3 at least soft claws on the chuck, supplementary guiding mechanism includes internal stay hexagonal ring and 3 at least adjusting screw, the internal stay hexagonal ring has six sides that regular hexagon distributes, and the centre of every side is equipped with an adjusting screw hole, adjusting screw install with among the adjusting screw hole that soft claw position corresponds, adjusting screw one end and internal stay hexagonal ring threaded connection, the other end is located outside the internal stay hexagonal ring, as the location end of soft claw.

In the technical scheme, the positioning auxiliary adjusting mechanism of the soft claw is formed by matching the inner support hexagonal ring and the adjusting screw, and the extension length of the adjusting screw is continuously adjustable, so that the material removing amount during fine boring of the soft claw can be reduced, the fine boring time can be shortened, and the service life of the soft claw can be prolonged.

The technical scheme can be suitable for different soft claw settings. For example, 3 soft claws are provided, and adjacent soft claws are arranged radially towards the center of the chuck at intervals of 120 degrees. At the moment, 3 adjusting screws are arranged in adjusting screw holes in 3 spaced side faces of the inner-support hexagonal ring, the diameter of an external circle of a positioning end of each of the 3 adjusting screws is set to enable the diameter of a clamping circle formed by 3 soft claws to be slightly smaller than the diameter of an outer circle of a part to be machined, and when the soft claws are finely bored, the positioning ends of the 3 adjusting screws are tightly propped by the soft claws. In this case, the set screw hole has a backup, and even if there is a set screw hole failure, the set screw holes on the other 3 spaced side surfaces can be used.

Or 6 soft claws are arranged, and adjacent soft claws are arranged radially towards the center of the chuck at intervals of 60 degrees. At the moment, 6 adjusting screws are arranged and are respectively installed in 6 adjusting screw holes of the inner-support hexagonal ring, the diameter of an outer circle of a positioning end of each 6 adjusting screw is set to enable the diameter of a clamping circle formed by 6 soft claws to be slightly smaller than the diameter of an outer circle of a part to be machined, and when the soft claws are finely bored, the soft claws tightly push the positioning ends of the 6 adjusting screws.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

1. the utility model discloses supplementary guiding mechanism adopts the internal stay hexagonal ring to assist with adjusting screw, can replace multiple not unidimensional metal ring from this, and the weight and the kind of the anchor clamps that significantly reduce anchor clamps cost of manufacture, administrative cost.

2. When adopting the metal ring series among the prior art, the ring external diameter is the condition of discrete distribution different, the utility model discloses well screw is adjustable in succession in the position on the internal stay hexagonal ring, consequently can select suitable screw extension length, the material volume of getting rid of soft claw when reducing the soft claw of smart boring from this reduces the process time of the soft claw of smart boring to because the volume of getting rid of soft claw is little and increase the life of soft claw.

3. Compared with the continuous test and replacement of the metal circular ring, the position of the adjusting screw on the inner support hexagonal ring is only required to be adjusted, the operation is easy, the adjustment of the required size is convenient, and the preparation time of fine boring of the soft claw is shortened.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the state in preparation for fine boring of the soft jaws;

FIG. 3 is a schematic view showing a state in fine boring of the soft jaw;

FIG. 4 is a schematic illustration of the part as it is finish bored;

fig. 5 is a schematic sectional view at the time of fine boring.

Wherein: 1. a chuck; 2. soft claws; 3. an inner support hexagonal ring; 4. an adjusting screw; 5. a part; 6. adjusting the screw hole.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

the first embodiment is as follows: referring to fig. 1, the boring fixture mainly comprises a clamping mechanism and an auxiliary adjusting mechanism, wherein the clamping mechanism comprises 3 soft claws 2 arranged on a pneumatic or hydraulic chuck 1, the auxiliary adjusting mechanism comprises an inner support

hexagonal ring

3 and 3 adjusting screws 4, as shown in fig. 1, the inner support hexagonal ring 3 is provided with six sides distributed in a regular hexagon, and an adjusting screw hole 6 is arranged in the center of each side.

In the embodiment, the structure is 3 soft claws, and adjacent soft claws are arranged radially towards the center of the chuck at intervals of 120 degrees. Correspondingly, 3 adjusting screw holes on 3 side surfaces distributed on the inner-support hexagonal ring at intervals are selected, and 3 adjusting screws are installed; one end of the adjusting screw is in threaded connection with the inner support hexagonal ring, and the other end of the adjusting screw is located outside the inner support hexagonal ring and serves as a positioning end of the soft claw.

In the embodiment, the threads on the inner support hexagonal ring 3 are connected with the adjusting screws 4 to form a thread pair to form a mechanical static connection, and the clamping force of the hydraulic or pneumatic chuck 1 acts on the adjusting screws 4 through the soft claws 2. The threads and the adjusting screws 4 are screwed mutually, and the required dimensional accuracy of different outer diameters is realized by adjusting the extension lengths of the screws in a free state.

The connecting structure of the thread pair can bear very large clamping force, and tests show that the strength of the hollow inner-support hexagonal ring 3 can meet the rigidity requirement of the fine boring soft claw.

The boring clamp can be freely adjusted to a required size, can replace metal rings with a series of sizes, reduces the manufacturing cost of the clamp, and reduces the boring time of the soft claw.

The application process of this embodiment is as follows:

referring to fig. 2, the inner hexagonal ring with the set screw is placed on the chuck surface with the soft jaws open.

The soft claws are made to clamp the adjusting screws, as shown in fig. 3, and fine boring is performed on the soft claws in this state to obtain the required clamping accuracy.

And (3) loosening the soft claws, taking down the internal support hexagonal ring, placing the part 5 to be processed between the soft claws as shown in fig. 4, clamping, and boring, wherein fig. 5 is a schematic sectional view.

Example two: a boring clamp mainly comprises a clamping mechanism and an auxiliary adjusting mechanism, and the overall structure is similar to that of the embodiment. Wherein, be equipped with 6 soft claws, adjacent soft claw interval 60 is arranged radially towards the chuck center. Be equipped with 6 adjusting screw, 6 adjusting screw install respectively in 6 adjusting screw holes of internal stay hexagonal ring, and the circumscribed circle diameter of 6 adjusting screw's location end sets up the centre gripping circle diameter that makes 6 soft claws constitute slightly is less than the excircle diameter of waiting to process the part, when the fine boring soft claw, soft claw top is tight 6 adjusting screw's location end.

Claims

1. The utility model provides a boring jig mainly comprises fixture and supplementary guiding mechanism, fixture is including installing 3 at least soft claws on the chuck, its characterized in that: supplementary guiding mechanism includes internal stay hexagonal ring and 3 at least adjusting screw, internal stay hexagonal ring has six sides that regular hexagon distributes, and the centre of every side is equipped with an adjusting screw hole, adjusting screw install with among the adjusting screw hole that soft claw position corresponds, adjusting screw one end and internal stay hexagonal ring threaded connection, the other end is located outside the internal stay hexagonal ring, as the location end of soft claw.

2. A boring jig according to claim 1, wherein: 3 soft claws are arranged, and adjacent soft claws are arranged radially towards the center of the chuck at intervals of 120 degrees.

3. A boring jig according to claim 2, wherein: the 3 adjusting screws are arranged in adjusting screw holes in 3 spaced side faces of the inner-support hexagonal ring, the diameter of an external circle of a positioning end of each of the 3 adjusting screws is set to enable the diameter of a clamping circle formed by the 3 soft claws to be slightly smaller than the diameter of an outer circle of a part to be machined, and when the soft claws are finely bored, the positioning ends of the 3 adjusting screws are tightly propped against the soft claws.

4. A boring jig according to claim 1, wherein: 6 soft claws are arranged, and adjacent soft claws are arranged radially towards the center of the chuck at an interval of 60 degrees.

5. A boring jig according to claim 4, wherein: be equipped with 6 adjusting screw, 6 adjusting screw install respectively in 6 adjusting screw holes of internal stay hexagonal ring, and the circumscribed circle diameter of 6 adjusting screw's location end sets up the centre gripping circle diameter that makes 6 soft claws constitute slightly is less than the excircle diameter of waiting to process the part, when the fine boring soft claw, soft claw top is tight 6 adjusting screw's location end.