Simple fixture for upper boring and drilling

Abstract

The utility model relates to the technical field of tooling fixtures, and discloses a simple fixture for upper boring and drilling, comprising a bottom plate, a positioning ring symmetrically fixed on the surface of the bottom plate, a latch and a plurality of positioning fixtures fixed on the surface of the bottom plate and on the periphery of the positioning ring, and a cushion block fixed on the surface of the bottom plate and on one side of each positioning fixture. The utility model is a special fixture, which improves work efficiency and has strong practicality.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a simple fixture for boring and drilling holes. Background Art

[0002] The assembly of the drive axle mounting plate of the forklift drive system is processed on a vertical machining center, and the processing content includes boring, drilling, and tapping. The workpiece is placed on the worktable, and the vertical edges on both sides of the workpiece are used as the reference for alignment, and the pressing plate is pressed for processing. Due to the positioning reference error, it is impossible to ensure that the center of the boring circle is the semicircular surface of the workpiece, the position accuracy is low, and the rework rate is high. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to propose a simple fixture for boring and drilling holes, a special fixture, improve work efficiency, and have strong practicality.

[0004] The simple upper boring and drilling fixture proposed by the utility model comprises a bottom plate, a positioning ring is symmetrically fixed on the surface of the bottom plate, a latch and a plurality of positioning fixtures are fixed on the surface of the bottom plate and on the periphery of the positioning ring, and a pad is fixed on the surface of the bottom plate and on one side of each positioning fixture;

[0005] The positioning fixture includes a stud and a supporting bolt fixed on the surface of the base plate, a pressure plate is sleeved on the surface of the stud, a shoulder nut is threadedly installed on the surface of the stud and located above the pressure plate, and a spring is sleeved on the surface of the stud and located below the pressure plate.

[0006] Preferably, the positioning ring includes a base, the inner ring of the base is fixed with a clamping ring, the top outer surface of the clamping ring is provided with a first limiting groove, the bottom inner surface of the clamping ring is provided with a second limiting groove, and the surface of the base is provided with multiple small holes and multiple large holes.

[0007] Preferably, a waist hole is opened in the middle of the surface of the pressure plate, the support bolt passes through the waist hole, a slide groove is opened on the lower surface of the pressure plate, and the top of the support bolt is movably connected to the slide groove.

[0008] Preferably, a plurality of threaded mounting holes are provided on the surface of the base plate, a plurality of positioning keys are symmetrically provided on the side wall of the base plate, and lifting screws are fixed at the four corners of the base plate.

[0009] Preferably, a drive axle mounting plate assembly is commonly placed on the surface of the pad.

[0010] The beneficial effects of the utility model are:

[0011] 1. Special fixtures ensure processing quality;

[0012] 2. Only the first piece needs to be aligned, which saves the alignment time for each piece and improves processing efficiency;

[0013] 3. Easy to clamp, easy to operate and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the placement structure of the drive axle mounting plate assembly of the simple upper boring and drilling fixture.

[0015] Figure 2 The utility model is a schematic diagram of the bottom plate installation structure of the simple upper boring and drilling fixture.

[0016] Figure 3 The utility model is a schematic diagram of the positioning ring structure of the simple upper boring and drilling fixture.

[0017] Figure 4 The utility model is a schematic diagram of the bottom plate structure of the simple upper boring and drilling fixture.

[0018] In the figure: 1. bottom plate; 2. positioning ring; 21. clamping ring; 22. first limiting groove; 23. second limiting groove; 24. base; 25. small hole; 26. large hole; 3. stop pin; 4. stud; 5. shoulder nut; 6. pressure plate; 7. support bolt; 8. spring; 9. elastic support; 10. positioning key; 11. spacer; 12. lifting screw; 13. threaded mounting hole; 14. drive axle mounting plate assembly. DETAILED DESCRIPTION

[0019] Reference Figure 1-4 , a simple upper boring and drilling fixture comprises a bottom plate 1, a positioning ring 2 is symmetrically fixed on the surface of the bottom plate 1, a latch and a plurality of positioning fixtures are fixed on the surface of the bottom plate 1 and on the periphery of the positioning ring 2, and a pad 11 is fixed on the surface of the bottom plate 1 and on one side of each positioning fixture;

[0020] The positioning fixture includes a stud 4 and a support bolt 7 fixed on the surface of the base plate 1. The surface of the stud 4 is sleeved with a pressure plate 6. A shoulder nut 5 is threadedly installed on the surface of the stud 4 and located above the pressure plate 6. A spring 8 is sleeved on the surface of the stud 4 and located below the pressure plate 6.

[0021] The positioning ring 2 includes a base 24, the inner ring of which is fixed with a clamping ring 21, the top outer surface of the clamping ring 21 is provided with a first limiting groove 22, the bottom inner surface of the clamping ring 21 is provided with a second limiting groove 23, and the surface of the base 24 is provided with a plurality of small holes 25 and a plurality of large holes 26.

[0022] A waist hole is provided in the middle of the surface of the pressing plate 6, and the supporting bolt 7 passes through the waist hole. A sliding groove is provided on the lower surface of the pressing plate 6, and the top of the supporting bolt 7 is movably connected to the sliding groove.

[0023] A plurality of threaded mounting holes 13 are provided on the surface of the bottom plate 1 , a plurality of positioning keys 10 are symmetrically provided on the side wall of the bottom plate 1 , and lifting screws 12 are fixed to the four corners of the bottom plate 1 .

[0024] A drive axle mounting plate assembly 14 is placed on the surface of the pad 11 .

[0025] When the device is in use, the fixture is fixed to the workbench: the fixture bottom plate is composed of two mounting keyways, four bolt opening slots, and a concave surface on the reverse side to reduce the contact surface. The fixture is fixed with the machine tool workbench slot by the positioning key 10 (two pieces). The remaining four open U-shaped slots are used to pass the screw pressure plate to press the fixture, and the fixture is fixed. The workpiece is fixed to the fixture: the positioning ring 2 (two symmetrical pieces) is an important positioning element on the fixture, which is positioned by the positioning pin installed in the pin hole 25 and fixed by the bolt hole 26. The workpiece is placed on the positioning ring 2, and the outer circle 21 is installed in conjunction with the inner hole of the workpiece, and the degree of freedom in the up and down directions is determined. The direction of rotation is determined by the stop pin 3 being close to each other, and all the degrees of freedom of the workpiece are determined. The stop pin is removed before boring, and the Haver cover is installed. For easy installation, a 30° chamfer 22 is processed on the head. The workpiece is supported by the pad 11 below, and the corresponding position is pressed by the pressure plate 6 above. At this point, the workpiece is fixed and waiting for processing. During the processing, in order to prevent iron chips and cutting fluid from being stored in the closed space inside the positioning ring 2, two channels 23 are designed to discharge cutting fluid and blow iron chips. After drilling through the workpiece, the drill bit will continue to move downward for a distance. In order to prevent the drill bit from interfering with the positioning surface of the positioning ring 2, which will cause the drill bit to break, and the iron chips are not easy to be discharged, affecting the processing quality, a safe distance 24 is left between the positioning surface and the workpiece to facilitate chip removal. The fixture is a bilaterally symmetrical structure to achieve the processing of bilaterally symmetrical workpieces.

Claims

1. Simple fixture for upper boring and drilling, characterized by: It comprises a bottom plate, a positioning ring is symmetrically fixed on the surface of the bottom plate, a latch and a plurality of positioning fixtures are fixed on the surface of the bottom plate and on the periphery of the positioning ring, and a cushion block is fixed on the surface of the bottom plate and on one side of each positioning fixture; The positioning fixture includes a stud and a supporting bolt fixed on the surface of the base plate, a pressure plate is sleeved on the surface of the stud, a shoulder nut is threadedly installed on the surface of the stud and located above the pressure plate, and a spring is sleeved on the surface of the stud and located below the pressure plate.

2. The simple upper boring and drilling fixture according to claim 1, characterized in that: The positioning ring includes a base, the inner ring of the base is fixed with a clamping ring, the top outer surface of the clamping ring is provided with a first limiting groove, the bottom inner surface of the clamping ring is provided with a second limiting groove, and the surface of the base is provided with a plurality of small holes and a plurality of large holes.

3. The simple upper boring and drilling fixture according to claim 1, characterized in that: A waist hole is provided in the middle of the surface of the pressing plate, and the supporting bolt passes through the waist hole. A sliding groove is provided on the lower surface of the pressing plate, and the top of the supporting bolt is movably connected to the sliding groove.

4. The simple upper boring and drilling fixture according to claim 1, characterized in that: The surface of the bottom plate is provided with a plurality of threaded mounting holes, the side wall of the bottom plate is symmetrically provided with a plurality of positioning keys, and the four corners of the bottom plate are all fixed with lifting screws.

5. The simple upper boring and drilling fixture according to claim 1, characterized in that: A drive axle mounting plate assembly is commonly placed on the surfaces of the cushion blocks.

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