CN211866664U - Small box type drilling tool for processing through hole parts of building machinery - Google Patents

Abstract

The utility model discloses a small-size box drilling tool of building machinery processing through-hole part. The left inner end of a positioning sleeve (3) is movably arranged on a top piece rod (1), the positioning sleeve (3) is fixed at the left end of a drill body (7) by a fixing screw (6), a top piece shaft (14) is movably arranged in the drill body (7) and the positioning sleeve (3), the sleeve (9) is fixedly arranged at the right upper end of the drill body (7), a rotary plate (11) is arranged at the right end of the sleeve (9) by a fastening screw (12), the left end of a knurling compression screw handle (13) is connected with a pressing block (10), and the lower end of the rotary plate (11) is fixed. Because the utility model discloses the innovation has designed small-size box drilling tool, guarantees machine part through-hole axis and the coincidence of part central line when processing even machine part, guarantees pitch-row size and tolerance requirement, has guaranteed product quality, has effectively saved process time and part measuring time, has stopped the product and has batched the out-of-tolerance and scrap, can satisfy mass production requirement.

Description

Small box type drilling tool for processing through hole parts of building machinery

The technical field is as follows:

the utility model relates to a be applicable to the construction machinery field, the small-size box drilling tool of the construction machinery processing through-hole part that concretely is applicable to processing through-hole part and uses.

Background art:

at present, after all the procedures of the construction machinery parts are finished according to the manufacturing process rules, through holes are required to be processed at last, and the following problems are easy to occur in the production process: firstly, owing to adopt simple and easy drilling tool not to inlay the drill bushing, and adopt the structure steel to make anchor clamps body, thermal treatment hardness is low, and the sharp wearing and tearing in drilling tool hole make the drill bit centering inaccurate among the mass production, and skew part center causes the batch to scrap. And secondly, unidirectional drilling is carried out, the drill bit is too long, and the cutting process generates deflection, so that the axis of the through hole is not coincident with the central line of the part, the hole pitch size is out of tolerance, and the drawing size requirement cannot be met. Thirdly, the part is drilled, burrs are generated at the outlet of the drill bit, the burrs and chips are clamped between the part and the positioning hole of the drilling tool, the clamping stagnation phenomenon occurs, and the part is labor-consuming and time-consuming to disassemble.

The utility model has the following contents:

the utility model aims to solve the technical problem that a novel small-size box drilling tool is provided for building machinery processing is the part even, can guarantee hole apart from size and tolerance requirement, guarantees product quality, effectively saves process time and part measuring time, and structural design is reasonable, and the part is installed and removed the convenience, uses the location reliable, improves production efficiency's small-size box drilling tool of building machinery processing through-hole part by a wide margin.

The utility model provides a technical scheme that technical problem adopted is: the ejector rod of the small box type drilling tool for machining the through hole part of the building machinery is movably arranged at the left inner end of the positioning sleeve, the positioning sleeve is fixed at the left end of the drilling tool body by using a fixing screw, the ejector shaft is movably arranged in the drilling tool body and the positioning sleeve, the left end of the ejector shaft is movably connected with the positioning groove on the ejector rod by using a cylindrical pin and a spring, the sleeve is fixedly arranged at the upper right end of the drilling tool body, the rotary plate is arranged at the right end of the sleeve by using a fastening screw, the knurling is connected with the left end of a screw handle and a pressing block, and the part is.

The utility model has the advantages that: because the small box type drilling tool is innovatively designed and used for machining mechanical parts, the coincidence of the axes of the through holes of the mechanical parts and the central lines of the parts can be ensured, the requirements of hole pitch size and tolerance are ensured, the product quality is ensured, the machining time and the part measuring time are effectively saved, and the batch out-of-tolerance and scrapping of products are avoided. Can meet the requirement of mass production. And structural design is reasonable, and the part is installed and removed the convenience, uses the location reliable, satisfies product quality control requirement, has improved production efficiency.

Description of the drawings:

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

Fig. 2 is a view from a-a of fig. 1.

The specific implementation mode is as follows:

as shown in figures 1 and 2, a top member rod 1 of a small box type drilling tool for machining through hole parts of a building machine is movably arranged at the left inner end of a positioning sleeve 3, the positioning sleeve 3 is fixed at the left end of a drilling tool body 7 through a fixing screw 6, a top member shaft 14 is movably arranged in the drilling tool body 7 and the positioning sleeve 3, the left end of the top member shaft is movably connected with a positioning groove 16 on the top member rod 1 through a cylindrical pin 2 and a spring 5, a sleeve 9 is fixedly arranged at the right upper end of the drilling tool body 7, a rotary plate 11 is arranged at the right end of the sleeve 9 through a fastening screw 12, the left end of a compression screw handle 13 is connected with a compression block 10, and a movable compression part 18 is fixed.

As shown in fig. 1 and 2, a drill bushing 8 is respectively arranged at the central part of the upper end and the lower end of a drill body 7 of the small box type drilling tool for machining through-hole parts of the building machinery, and a positioning pin 15 is arranged at the rear central part of the drill body 7 and is used for positioning and tightening a part 18.

As shown in fig. 1 and 2, a screw 17 is movably arranged at the left upper end of the ejector rod 1 of the small box type drilling tool for machining through hole parts of the building machinery.

As shown in figures 1 and 2, a part 18 is movably arranged in a drilling tool body 7 of the small box type drilling tool for machining through hole parts of the building machinery, the left end of the part 18 is movably connected with a jacking rod 1, and the right end of the part 18 is movably connected with a pressing block 10 and tightly pressed.

The operation steps and the technical mechanism of the utility model are as follows:

the method comprises the following operation steps:

1. rotating the knurling pressing screw handle in the anticlockwise direction;

2. the rotary pressing mechanism rotates for 45 degrees along the knurling pressing screw handle as a center;

3. aligning the opening of the part to the direction of the cylindrical positioning pin, pushing the part in the opening, and positioning the cylindrical pin at an angular direction;

4. the rotating and pressing mechanism returns to the original position, the opening of the rotating plate is automatically lapped on the screw, and the handle screw is rotated clockwise to press the part;

5. a hand drill presses down a handle of the bench drill to guide a drill bit to enter a drill bushing to start drilling, and after one side is machined, the drill is turned over to machine the other side hole;

6. after drilling is completed, the pressing mechanism is loosened and rotated to a specified position, the ejector rod is knocked, and the part is withdrawn.

Secondly, the technical mechanism and the part positioning analysis are as follows:

the inner hole of the drilling tool body limits 4 degrees of freedom of the part. Namely: the degree of freedom of Y-axis movement, the degree of freedom of Y-axis rotation, the degree of freedom of Z-axis movement and the degree of freedom of Z-axis rotation; the positioning sleeve limits the X-axis movement freedom of the part, the cylindrical positioning pin limits the X-axis rotation freedom of the part, and all the 6 freedom degrees of the part at the space position are limited, so that the design and positioning requirements of the clamp are met.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims (4)

1. A small box-type drilling tool for machining through hole parts of building machinery is characterized in that: the left inner end of the positioning sleeve (3) is arranged in the top piece rod (1) in a movable mode, the positioning sleeve (3) is fixed at the left end of the drill body (7) through the fixing screw (6), the top piece shaft (14) is arranged in the drill body (7) and the positioning sleeve (3) in a movable mode, the left end of the positioning sleeve is movably connected with the positioning groove (16) on the top piece rod (1) through the spring (5) through the cylindrical pin (2), the sleeve (9) is fixedly arranged at the right upper end of the drill body (7), the rotary plate (11) is arranged at the right end of the sleeve (9) through the fastening screw (12), the left end of the knurling compression screw handle (13) is connected with the compression block (10), and the compression part (18) is fixed at the lower end of the rotary plate (11.

2. The small box drill for machining through-hole parts according to claim 1, wherein: the central parts of the upper end and the lower end of the drill body (7) are respectively provided with a drill sleeve (8), and the positioning pin (15) is arranged at the central part behind the drill body (7) and is used for positioning and jacking the part (18).

3. The small box drill for machining through-hole parts according to claim 1, wherein: the upper left end of the ejector rod (1) is movably provided with a screw (17).

4. The small box drill for machining through-hole parts according to claim 1, wherein: the drill body (7) is movably internally provided with a part (18), the left end of the part (18) is movably connected with the ejector rod (1), and the right end of the part is movably connected with the pressing block (10) and tightly pressed.

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