CN205394068U - Modularization seriation boring grab - Google Patents

Abstract

The utility model discloses a modular serialized drilling jig, which comprises a base connecting plate fixedly connected with a machine tool. The upper end of the base connecting plate is connected with a pull rod assembly. There is a floating slider, a compression spring is set between the base and the floating slider, the upper end of the floating slider is covered with a gland, and the gland and the base are connected by bolts. A power rod is installed in the through hole, the upper end of the power rod is installed on the gland through a rolling bearing, the upper end of the rolling bearing is provided with a pressure block fixed on the gland, the upper end of the power rod is fixed with a hexagonal flange nut, and the upper end of the floating slider is provided with a The threaded hole connected to the expansion sleeve tie rod assembly drives the floating slider to move up and down by turning the power rod, so as to achieve the purpose of tightening or loosening the workpiece, which achieves fast loading and unloading and improves the loading and unloading efficiency of the workpiece. It is set under the floating slider The compressed spring facilitates the floating of the floating slider.

Description

A Modular Serialized Drilling Fixture

technical field

The utility model belongs to the field of clamps, in particular to a modular serialized drilling clamp.

Background technique

The drilling process is one of the most commonly used processes in the machining of parts. At present, hydraulic drilling jigs are mostly used in the world. This type of jig has high precision, but is expensive. Domestic manufacturers use three uniformly distributed pressure blocks to fix the workpiece axially from the outer edge of the upper end surface. The compression process is achieved by manually tightening three bolts. This type of clamp has a large volume and it is difficult to ensure uniform clamping force at each point. , Loading and unloading takes a long time, and the versatility is very low. There are many types of drilling parts in our factory, and the number of individual types is small, and frequent production changes are required between products. Therefore, in the design of fixtures, versatility is a factor that needs to be considered. There are many types of parts, frequent production changes, a large number of fixtures, and large volume. Due to the structural limitations of the original fixture, basically each type of part corresponds to a separate set of fixtures, and the fixtures are large in size, which makes inventory management inconvenient.

Utility model content

The purpose of the utility model is to provide a modular serialized drilling jig to overcome the problems in the prior art that the number of jigs is large, the volume is large, the loading and unloading of workpieces takes a long time, and the problems of single use exist.

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

A modular serialized drilling jig, including a base connection plate fixedly connected to a machine tool, an expansion sleeve pull rod assembly is connected to the upper end of the base connection plate, wherein the base connection plate includes a base with a concave hole in the middle, and a floating slider is provided on the base. There is a compression spring between the base and the floating slider. The upper end of the floating slider is covered with a gland, and the lower end of the gland contacts the upper end of the base. The gland and the base are fixed by bolts. A power rod is installed in the threaded through hole of the slider, and the upper end of the power rod is installed on the gland through a rolling bearing. The upper end of the rolling bearing is provided with a pressure block fixed on the gland. The upper end of the block is provided with a threaded hole for connecting with the expansion sleeve pull rod assembly.

Further, a boss is provided at the lower end of the floating slider, and the boss at the lower end of the floating slider is inserted into the concave hole of the base.

Further, the base is provided with four evenly distributed grooves for placing compression springs.

Further, the lower end of the power rod is installed on the base through a ball bearing.

Further, the middle part of the power rod is threaded, and is threadedly connected with the threaded through hole of the floating slider.

Further, the floating slider is provided with a guide through hole, the lower end of the guide rod passes through the guide through hole on the floating slider and is threadedly connected with the base, and the upper end of the guide rod is fixed on the gland through a fastening nut.

Furthermore, the pull rod assembly of the expansion sleeve includes a pull rod whose lower end is connected in the threaded hole of the floating slider.

Further, the diameter of the tie rod gradually increases from bottom to top, the outside of the tie rod is covered with an expansion sleeve body, and the outside of the expansion sleeve body is fixed with a support seat by screws.

Further, the upper end of the power rod is provided with an inner hexagonal hole for twisting the power rod.

Further, the base is fixedly installed on the machine tool by bolts.

Compared with the prior art, the utility model has the following beneficial technical effects:

The utility model is a modular serialized drilling jig. Through the base connection plate fixedly connected with the machine tool, the upper end of the base connection plate is connected with an expansion sleeve pull rod assembly, wherein the base connection plate includes a base with a concave hole in the middle. There is a floating slider, a compression spring is set between the base and the floating slider, the upper end of the floating slider is covered with a gland, the lower end of the gland is in contact with the upper end of the base, the gland and the base are fixed by bolts, and the floating slider is provided with a screw thread. A power rod is installed in the threaded hole of the floating slider. The upper end of the power rod is installed on the gland through a rolling bearing. The upper end of the rolling bearing is provided with a pressure block fixed on the gland. The upper end of the power rod is provided with a hexagonal flange nut , the upper end of the floating slider is provided with a threaded hole for connecting with the expansion sleeve tie rod assembly. By turning the power rod, the floating slider moves up and down, so as to achieve the purpose of tightening or loosening the workpiece. One-button loading and unloading is greatly improved. The loading and unloading efficiency of the workpiece is improved. By setting the compression spring at the lower end of the floating slider, the floating of the floating slider is facilitated. By installing the hexagonal flange nut on the upper end of the power rod, the power rod is prevented from loosening during the work of the fixture.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is a schematic diagram of the structure of the expansion sleeve tie rod assembly.

Figure 3 is a schematic diagram of the body structure of the expansion sleeve.

Among them, 1. base; 2. fastening nut; 3. guide rod; 4. floating slider; 5. compression spring; 6. gland; 7. ball bearing; 8. power rod; 9. pressing block; 10. Hexagonal flange nut; 11. Expander body; 12. Support seat; 13. Expander pull rod assembly; 14. Bolt; 15. Pull rod; 16. Bonded expander.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Figure 1, a modular serialized drilling jig includes a base connection plate fixedly connected to the machine tool, and the upper end of the base connection plate is connected with an expansion sleeve pull rod assembly 13, wherein the base connection plate includes a base with a concave hole in the middle 1. There is a floating slider 4 on the base 1, and a boss is provided at the lower end of the floating slider 4. The boss at the lower end of the floating slider 4 is inserted into the concave hole of the base 1. There is a compression between the base 1 and the floating slider 4. Spring 5, the base 1 is provided with four evenly distributed grooves for placing the compression spring 5, the upper end of the floating slider 4 is provided with a threaded hole, the upper end of the floating slider 4 is covered with a gland 6, and the lower end of the gland 6 is connected to the base 1 The upper end is in contact, the gland 6 and the base 1 are fixed by bolts, the floating slider 4 is provided with a guide through hole, the lower end of the guide rod 3 passes through the guide through hole on the floating slider 4 and is connected with the base 1 by threads, and the upper end of the guide rod 3 Fixed on the gland 6 by the fastening nut 2, the floating slider 4 is provided with a threaded through hole, a power rod 8 is installed in the threaded through hole of the floating slider 4, and the upper end of the power rod 8 is installed on the gland 6 through a rolling bearing , the upper end of the rolling bearing is provided with a pressure block 9 fixed on the gland 6, the power rod 8 is axially positioned through the pressure block 9 and the rolling bearing, the lower end of the power rod 8 is installed on the base 1 through the ball bearing 7, and the middle part of the power rod 8 Be provided with screw thread, be threadedly connected with the threaded through hole of floating slide block 4, the hexagonal flange surface nut 10 that is used for anti-loosening is fixed on the upper end of power rod 8, the inner hexagonal hole that can be used for rotating power rod 8 at the upper end of power rod 8, wherein The expansion sleeve pull rod assembly 13 includes an integrally bonded expansion sleeve 16 and a pull rod 15. The lower end of the pull rod 15 is provided with threads, and the lower end of the pull rod 15 is connected with the threaded through hole of the floating slider 4. The pull rod 15 is tapered from bottom to top, The diameter gradually increases from bottom to top. The outside of the pull rod 15 is covered with an expansion sleeve body 11, and the outside of the expansion sleeve body 11 is fixed with a support seat 12 by screws. It is fixedly installed on the machine tool by bolts 14. Wherein the bonding expanding sleeve 16 is formed by bonding eight evenly distributed flaps of cut flaps, and has good radial flexibility. When assembling, the pull rod 15 passes through the central hole of the expansion sleeve body 11, and is connected with the floating slider 4 through the thread at the bottom end, and the tapered inner wall of the expansion sleeve 16 is bonded to the outer tapered surface of the body 11, and the expansion sleeve 16 is bonded The outer cylindrical surface is in contact with the inner hole of the workpiece.

Below in conjunction with accompanying drawing, structural principle of the present utility model and operation steps are further described:

When installing, first install the base 1 on the drilling machine, then place the ball bearing 7, screw the guide rod 3 into the base, then put the compression spring 5, put the floating slider 4 through the guide rod and place it on the compression spring, Hold the upper end of the floating slider, screw the power rod 8 into the threaded hole of the floating slider until the lower end completely enters the ball bearing 7, then place the gland 6, ball bearing, and pressing block 9 in sequence, and fix the pressing block, then install Tighten the nut 2 to fix the guide rod.

Use the hex wrench to turn the power rod 8, and you can see the floating slider moving up and down smoothly from above, indicating that the base connection plate is installed well, then adjust the floating slider to the position where the upper end is about 4mm lower than the upper end of the gland, and screw on the hexagonal method Blue surface nut 10, so far, the installation of the base connection plate is completed;

Then install the expansion sleeve body 11 and the support seat 12 in sequence, and finally screw the expansion sleeve pull rod assembly 13 into the threaded hole of the floating slider through the thread pair.

When working, first loosen the hexagonal flange nut 10, and then use the hexagonal wrench to turn the power rod 8 counterclockwise. Tighten the workpiece. After the workpiece is tightened, re-tighten the hexagonal flange nut 10 to prevent the power rod 8 from loosening. When the fixture is working, the floating slider 4 drives the pull rod 15 to move downward, and the bonding expansion sleeve 16 moves down accordingly. Exist, the bonding expansion sleeve 16 is radially expanded while moving down, and the workpiece is tightened thereupon.

After the processing is completed, loosen the hexagonal flange nut, turn the power rod clockwise with the hexagonal wrench, the floating slider moves up, the expansion sleeve is loosened, and the workpiece can be removed smoothly.

Claims (10)

1. A modular serialized drilling jig is characterized in that it comprises a base connection plate fixedly connected to the machine tool, and the upper end of the base connection plate is connected with an expansion sleeve pull rod assembly (13), wherein the base connection plate includes a concave hole in the middle The base (1), the base (1) is provided with a floating slider (4), between the base (1) and the floating slider (4) is provided with a compression spring (5), and the upper end of the floating slider (4) is covered with Gland (6), the lower end of the gland (6) is in contact with the upper end of the base (1), the gland (6) and the base (1) are fixed by bolts, the floating slider (4) is provided with a threaded through hole, and the floating slider A power rod (8) is installed in the threaded through hole of (4), and the upper end of the power rod (8) is installed on the gland (6) through a rolling bearing, and the upper end of the rolling bearing is provided with a briquetting block (9) fixed on the gland (6). ), the upper end of the power bar (8) is provided with a hexagonal flange surface nut (10), and the upper end of the floating slider (4) is provided with a threaded hole for connecting with the expansion sleeve pull rod assembly (13). 2. A modular serialized drilling jig according to claim 1, characterized in that a boss is provided at the lower end of the floating slider (4), and the boss at the lower end of the floating slider (4) is inserted into the base (1) in the concave hole. 3. A modular serialized drilling jig according to claim 1, characterized in that the base (1) is provided with four evenly distributed grooves for placing compression springs (5). 4. A modular serialized drilling jig according to claim 1, characterized in that the lower end of the power rod (8) is mounted on the base (1) through a ball bearing (7). 5. A modular serialized drilling jig according to claim 1, characterized in that, the middle part of the power rod (8) is threaded, and is threadedly connected with the threaded through hole of the floating slider (4). 6. A modular serialized drilling jig according to claim 1, characterized in that the floating slider (4) is provided with a guide through hole, and the lower end of the guide rod (3) passes through the floating slider (4) The guide through hole on the top is threadedly connected with the base (1), and the upper end of the guide rod (3) is fixed on the gland (6) by a fastening nut (2). 7. A modular serialized drilling jig according to claim 1, characterized in that, the expansion sleeve tie rod assembly (13) includes a tie rod (15) whose lower end is connected in the threaded hole of the floating slider (4). 8. A modular serialized drilling jig according to claim 1, characterized in that the diameter of the tie rod (15) gradually increases from bottom to top, and the outer side of the tie rod (15) is covered with an expansion sleeve body (11) , the outside of the expansion sleeve body (11) is fixed with a support seat (12) by screws. 9. A modular serialized drilling jig according to claim 1, characterized in that the upper end of the power rod (8) is provided with an inner hexagonal hole for twisting the power rod (8). 10. A modular serialized drilling jig according to claim 1, characterized in that the base (1) is fixedly installed on the machine tool through bolts (14).