A non-integral angle and shaft diameter two-way indexing drilling tool for cylindrical parts

Abstract

The utility model relates to mechanical processing frock technical field especially, it is used for non integer angle and shaft diameter bidirectional's index drilling frock for cylindrical part, the utility model provides such a kind of processing requirement low's index drilling frock for non integer angle and shaft diameter bidirectional's of cylindrical part, it includes: base, base top middle position is equipped with fixed screw rod, the fixed screw rod length is greater than the length of cylindrical part, the fixed screw rod outside is opened with thread, upper locating plate, the fixed screw rod upper end is vertically slidably equipped with upper locating plate. The utility model is through first the screw hole bottom hole of part on end face stop is made, and a group of holes are hinged to reference hole, utilize the accurate positioning of one side two pins of upper locating pressboard and the establishment of 2 calibration grooves, so that machine operator easily and conveniently completed the non integer angle and shaft diameter bidirectional's index drilling of part, improve work efficiency, reduce processing cost.

Description

Technical Field

[0001] This utility model relates to the field of machining tooling technology, and in particular to an indexing drilling tooling for bidirectional non-integer angle and shaft diameter of cylindrical parts. Background Technology

[0002] In the existing machining industry, drilling of cylindrical parts is usually done by first marking holes on a CNC drilling machine or machining center, and then drilling on a radial drilling machine. However, the existing horizontal machining center has an integer indexing table, which cannot handle non-integer indexing. Furthermore, when the part has through holes with an angular relationship between its axial and radial directions, conventional drilling equipment can only ensure machining accuracy by measuring, calculating, and controlling the movement, which requires high precision.

[0003] Therefore, it is necessary to design an indexing drilling fixture with low machining requirements for bidirectional non-integer angles and shaft diameters of cylindrical parts. Utility Model Content

[0004] To overcome the shortcomings of existing horizontal machining centers, whose rotary table indexing is based on integer degrees and cannot handle non-integer degrees, and whose conventional drilling equipment can only ensure machining accuracy by measuring, calculating and controlling the movement when the workpiece has through holes with angular relationships between the axial and radial directions, resulting in high machining requirements, the technical problem of this utility model is to provide a bidirectional indexing drilling fixture for cylindrical parts with low machining requirements, suitable for non-integer angles and shaft diameters.

[0005] The technical implementation scheme of this utility model is as follows: a low-processing indexing drilling fixture for bidirectional non-integer angle and shaft diameter of cylindrical parts, comprising: a base and a fixing screw. The fixing screw is provided at the middle position of the top of the base. The upper end of the fixing screw is provided with an upper positioning plate in a sliding sleeve manner. The upper positioning plate is in dynamic fit with the inner stop of the end of the cylindrical part. The upper positioning plate has two calibration grooves. The included angle between the two calibration grooves and the center of the upper positioning plate is the angle between adjacent radial holes on the side wall of the cylindrical part. The upper end of the fixing screw is provided with a fixing nut by means of threaded connection. The top of the upper positioning plate is provided with a through-hole pin. The pin is inserted into the axial end hole of the cylindrical part. One of the two calibration grooves is on the same line as the line connecting the center of the upper positioning plate and the pin.

[0006] More preferably, the edge shape of the upper positioning plate fits the end of the cylindrical part, and the lower end of the upper positioning plate extends into the interior of the cylindrical part and slides into the existing inner stop of the part, ensuring that the part can be quickly installed in the predetermined position and avoiding tilted installation caused by uneven bottom of the cylindrical part.

[0007] More preferably, it also includes: a V-shaped fixing seat, wherein the top of the base is provided with a V-shaped fixing seat, the V-shaped opening of the V-shaped fixing seat contacts the outer arc surface of the cylindrical part, and the V-shaped fixing seat is fixed to the base by positioning effect and the first screw.

[0008] Beneficial effects: The structural features and advantages of this utility model are that, by relying on optimized processes, the screw holes on the end face stop of the part are first made, and a set of holes are selected and reamed to the reference hole. With the precise positioning of two pins on one side of the upper positioning plate and the establishment of two calibration slots, the machine tool operator can easily and conveniently complete the bidirectional indexing drilling of the part for non-integer angles and shaft diameters, which improves work efficiency and reduces processing costs. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0010] Figure 2 This is a partial three-dimensional structural diagram of the present invention.

[0011] Figure 3 This is a partial three-dimensional cross-sectional view of the present invention.

[0012] Figure 4 This is a three-dimensional structural diagram of the first working state of this utility model.

[0013] Figure 5 This is a second three-dimensional structural diagram of the present invention in its working state.

[0014] The meanings of the reference numerals in the figure are as follows: 1-base, 2-fixing screw, 3-upper positioning plate, 31-calibration groove, 4-fixing nut, 5-pin, 6-V-type fixing seat, 7-positioning pin, 8-first screw. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection and application of the present invention.

[0016] Example 1 like Figures 1 to 5 As shown, this utility model provides a bidirectional indexing drilling fixture for cylindrical parts with low processing requirements, which is used for non-integer angles and shaft diameters. It includes a base 1, a fixing screw 2, an upper positioning plate 3, a fixing nut 4, and a pin 5. The base 1 has a fixing screw 2 at the top center, the length of which is greater than the length of the cylindrical part. The fixing screw 2 has threads on its outer side. The upper end of the fixing screw 2 is vertically slidably provided with an upper positioning plate 3. The fixing screw 2 passes through the center of the upper positioning plate 3. The upper positioning plate 3 slides with the existing inner stop of the cylindrical part. During operation, the upper positioning plate 3 can restrict the cylindrical part on the base 1. The upper end of the fixing screw 2 is provided with a fixing nut 4 through a threaded connection. The fixing nut 4 is pressed with the upper positioning plate 3. After the upper positioning plate 3 restricts the cylindrical part, rotating the fixing nut 4 can restrict the upper positioning plate 3 to the current position on the fixing screw 2 together with the cylindrical part. There is a large gap between the fixing screw 2 and the upper positioning plate 3 to avoid over-positioning. Among them, the top edge of the upper positioning plate 3 has two calibration grooves 31, and the included angle between the two calibration grooves 31 and the center of the upper positioning plate 3 is the angle between adjacent radial holes on the side wall of the cylindrical part. The upper positioning plate 3 has a through-hole pin 5 at its top. The pin 5 is inserted into the axial end hole of the cylindrical part. There are two pins 5, which are symmetrical about the center of the upper positioning plate 3. One of the two calibration slots 31 is on the same line as the line connecting the center of the upper positioning plate 3 and the pin 5.

[0017] The upper positioning plate 3 has an edge shape that fits the end of the cylindrical part, and the lower end of the upper positioning plate 3 extends into the interior of the cylindrical part and slides into the existing inner stop of the part. The cooperation between the vertical side wall of the upper positioning plate 3 and the inner wall of the cylindrical part ensures that the part can be quickly installed in the predetermined position and avoids tilted installation caused by uneven bottom of the cylindrical part.

[0018] like Figure 1 and Figure 3 As shown, it also includes a V-shaped fixing seat 6, a positioning pin 7, and a first screw 8. The base 1 is provided with a V-shaped fixing seat 6 on its top. The V-shaped opening of the V-shaped fixing seat 6 contacts the outer arc surface of the cylindrical part. The V-shaped fixing seat 6 can position the cylindrical part to a position where the fixing screw 2 is coaxial with the part when the positioning plate 3 is not installed. The V-shaped fixing seat 6 is fixed to the base 1 by the first screw 8. The positioning pin 7 can assist in positioning the V-shaped fixing seat 6 on the base 1 before the first screw 8 is installed.

[0019] For example, the base 1 is equipped with a V-shaped fixing seat 6 and a fixing screw 2, which are fixed by a first screw, a positioning pin 7, and a fixing nut 4, respectively. Before drilling, the screw hole is drilled on the end face stop of the part to be drilled. A pair of holes are randomly selected and reamed to match the size of the pin 5. These two holes are used as process reference holes. The line connecting the two process reference holes passes through the center of the part to be drilled. When tooling is provided, the part is hoisted onto the base 1. At this time, the part is positioned by the V-shaped fixing seat 6 and the upper positioning plate. The upper positioning plate passes through the fixing screw 2 through its central hole and is placed on the end face of the part to be drilled. After rotating and adjusting the calibration plate to find the two process reference holes on the part, the pin 5 is used to achieve precise positioning of the two pin holes 5 on the upper positioning plate and the two process reference holes on the part with the part. The upper positioning plate is also provided with two calibration pins. The first calibration groove 31 is aligned with the two pin holes 5. The angle between the second calibration groove 31 and the first calibration groove 31 and the line connecting them to the center of the upper positioning plate 3 is the angle between adjacent radial holes on the side wall of the cylindrical part. When drilling, the machine tool is first operated, and its spindle holds the standard bar to align the first calibration groove 31 of the upper positioning plate. After calibration, the nut on the upper positioning plate is tightened to press the part. The spindle is then started to index and produce the screw holes of group A of the part. After completion, the tightening nut is released, the part is lifted, rotated and adjusted until the standard bar on the spindle aligns with the second calibration groove 31 on the upper positioning plate. Then, the nut on the upper positioning plate is tightened again to press the part. The spindle is then started again to index and produce the screw holes of group B of the part. In this way, the machine tool operator can easily and conveniently complete the bidirectional indexing drilling of the part for non-integer angles and shaft diameters, which improves efficiency and reduces processing costs.

[0020] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Therefore, all equivalent changes made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A dividing drilling fixture for bidirectional drilling of cylindrical parts with non-integer angles and shaft diameters, characterized in that, include: The base (1) and the fixing screw (2) are provided. The fixing screw (2) is provided at the middle position of the top of the base (1). The upper end of the fixing screw (2) is provided with an upper positioning plate (3) in a sliding sleeve manner. The upper positioning plate (3) is pressed and fitted with the end of the cylindrical part. The upper positioning plate (3) has two calibration grooves (31). The angle between the two calibration grooves (31) and the center of the upper positioning plate (3) is the angle between adjacent radial holes on the side wall of the cylindrical part. The upper end of the fixing screw (2) is provided with a fixing nut (4) by threaded connection. The top of the upper positioning plate (3) is provided with a through pin (5). The pin (5) is inserted and fitted with the axial end hole of the cylindrical part. One of the two calibration grooves (31) is on the same line as the line connecting the center of the upper positioning plate (3) and the pin (5).

2. The indexing drilling fixture for bidirectional non-integer angle and shaft diameter of cylindrical parts according to claim 1, characterized in that, The edge shape of the upper positioning plate (3) fits the end of the cylindrical part, and the lower end of the upper positioning plate (3) extends into the interior of the cylindrical part and slides with the existing inner stop of the part, ensuring that the part can be quickly installed in the predetermined position and avoiding tilting installation caused by uneven bottom of the cylindrical part.

3. A bidirectional indexing drilling fixture for cylindrical parts with non-integer angles and shaft diameters as described in claim 1, characterized in that, There is a large gap between the fixing screw (2) and the upper positioning plate (3).

4. A bidirectional indexing drilling fixture for cylindrical parts with non-integer angles and shaft diameters as described in claim 1, characterized in that it further... include: V-shaped fixing seat (6), the base (1) is provided with a V-shaped fixing seat (6) on the top, the V-shaped opening of the V-shaped fixing seat (6) contacts the outer arc surface of the cylindrical part, and the V-shaped fixing seat (6) is fixed on the base (1) by a positioning pin (7) and a first screw (8).

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