Scribing tool for machining small parts

Abstract

The utility model provides a scribing tool for machining small parts. The scribing tool is characterized in that through holes are formed in the left side and the right side of an upper pressing plate respectively; two threaded holes are formed in the positions, corresponding to the through holes, of the lower pressing plate; bolts respectively penetrate through the through holes in the upper pressing plate and are screwed into the threaded holes in the lower pressing plate; rotatable rollers are mounted at the parts, extending out of the lower pressing plate, of the bolts; the round nut is screwed on the bolt and supports the roller; a steel ruler with scale marks is inserted into a gap between the lower pressing plate and the upper pressing plate; the bolt head of the bolt tightly presses the upper clamping plate, and the steel ruler is clamped between the lower pressing plate and the upper pressing plate. According to the utility model, the circle center position of a hole can be conveniently found before a part is drilled.

Description

Technical Field

[0001] The utility model relates to the field of tooling, in particular to a marking tooling used for processing small parts. Background Art

[0002] Wind power gearboxes are usually composed of housings, gear parts, planetary carriers, small structural parts, etc. Usually, the housings, gears, planetary carriers and other parts have high machining accuracy requirements. Usually, the parts with high machining accuracy requirements are placed on the machining center for processing. There are also many small structural parts used on the gearbox. Some of these small structural parts are relatively simple and do not require high machining accuracy. If placed on a machining center or machine tool for processing, it is easy to cause a waste of production capacity. The processing content of some small structural parts is only to process through holes or threaded holes on the plane, which can be processed manually. The biggest difficulty in manual processing is that it is difficult to find the center position of the through hole or threaded hole required for processing on the workpiece.

[0003] The technical solution of the prior art 1 is:

[0004] According to the outline dimensions of the small parts on the wind turbine gearbox provided by the designers, equal height blocks are made in advance to support the lower plane of the small parts. After the workpiece is fixed and pressed with a pressing plate, it is processed on the machine tool.

[0005] The disadvantages of prior art one are:

[0006] 1. If it is placed on a machine tool for processing, it is necessary to manufacture various equal-height blocks of different heights and pressure plates of different lengths, and the cost of tooling is relatively high.

[0007] 2. For workpieces with low machining accuracy requirements or relatively simple machining content, placing them on the machine tool for processing can easily cause a waste of machine tool capacity.

[0008] 3. To process small parts of different sizes, it is necessary to switch back and forth between equal height blocks and pressure plates, resulting in a long waiting time for the machine tool and the machine tool's production capacity cannot be fully utilized.

[0009] The technical solution of the prior art 2 is:

[0010] According to the drawings of the small parts to be processed provided by the designer, a drilling jig for drilling is prepared in advance. Through holes are opened in advance on the drilling jig, and the drill bit of the electric drill passes through the through holes on the drilling jig for processing.

[0011] The disadvantages of the prior art 2 are:

[0012] 1. Although this method does not require processing on a machine tool, it does require the production of a drilling jig. When encountering small parts of different models, if the through holes and threaded holes to be processed are distributed differently, a new drilling jig needs to be made.

[0013] 2. When using a drill jig for processing, the drill jig and the small parts to be processed need to be fixed to prevent the parts from moving during the processing, which will affect the processing quality of the parts and waste time and effort. Utility Model Content

[0014] The utility model provides a marking tool for processing small parts, and aims to solve the disadvantages of the prior art so as to find the center position of a hole before drilling the part.

[0015] The technical solution adopted by the utility model to solve its technical problems is:

[0016] A marking tool for processing small parts, characterized by:

[0017] Through holes are respectively provided on the left and right sides of the upper clamping plate; and two threaded holes are provided on the lower clamping plate at positions corresponding to the above-mentioned through holes;

[0018] The bolts pass through the through holes on the upper clamping plate and are screwed into the threaded holes on the lower clamping plate;

[0019] The portion of the bolt extending out of the lower clamping plate is provided with a rotatable roller;

[0020] The round nut is threadedly installed on the bolt, and the round nut supports the roller;

[0021] A steel ruler with scale lines is inserted into the gap between the lower clamping plate and the upper clamping plate; the bolt head of the bolt presses the upper clamping plate, and the steel ruler is clamped between the lower clamping plate and the upper clamping plate.

[0022] The roller is a rolling bearing.

[0023] A locking washer is put onto the bolt, and a round nut presses the locking washer.

[0024] The axis of the through hole on the upper pressing plate is located above the transverse symmetry line of the upper pressing plate.

[0025] The utility model is beneficial in that:

[0026] The processing of different small parts does not require the use of machine tools or drilling jigs. It only requires the use of the marking tool of the utility model to mark the center of the through hole or threaded hole to be processed on the workpiece in advance, and then drill through it with a hand drill. The utility model tooling can be used for marking small parts with a certain range of contours. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 It is a cross-sectional view of the tooling of the utility model;

[0029] Figure 2 for Figure 1 A-direction view of the device in use. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the technical solution of the utility model, the following will briefly introduce the drawings required for the description. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without creative work. In order to facilitate the understanding of the utility model, the following will be combined with the drawings and specific embodiments to explain the utility model in more detail.

[0031] It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more centered elements can exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more centered elements can exist between them. The terms "upper", "lower", "inner", "outer", "bottom", etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] like Figure 1 , Figure 2 As shown:

[0033] The upper clamping plate 1 is a rectangular clamping plate with a certain thickness, and a through hole 11 is opened in advance on the left and right sides of the upper clamping plate 1. The lower clamping plate 2 has the same shape and thickness as the upper clamping plate 1, and the only difference is that at the positions where the through holes 11 are opened on the left and right sides of the upper clamping plate 1, two threaded holes 21 are opened in advance at the corresponding positions of the lower clamping plate 2.

[0034] The utility model uses two bolts 3. First, the two bolts 3 are respectively passed through the two through holes 11 opened in advance on the upper clamping plate 1, and one bolt 3 is installed on each of the left and right sides of the upper clamping plate 1, and then the two bolts 3 are screwed into the two threaded holes 21 opened in advance on the lower clamping plate 2.

[0035] The gap between the lower clamping plate 2 and the upper clamping plate 1 is controlled by the bolt 3, and the gap between the lower clamping plate 2 and the upper clamping plate 1 is controlled to a certain size (slightly larger than the thickness of the steel ruler 8).

[0036] The bearing 4 and the bearing 5 are sequentially installed to the portion of the bolt 3 extending out of the lower clamping plate 2, wherein the bearing 4 and the bearing 5 are rolling bearings of the same type, and the utility model uses a total of four bearings.

[0037] After the bearing is installed, the anti-loosening gasket 6 is sleeved onto the bolt 3. The utility model uses two anti-loosening gaskets 6 in total.

[0038] The round nut 7 is screwed onto the bolt 3, the round nut 7 supports the loosening gasket 6, the anti-loosening gasket 6 supports the bearing 4, the bearing 4 supports the bearing 5, and the bearings 4 and 5 are rotatable.

[0039] Then insert the steel ruler 8 into the gap reserved in advance between the lower clamping plate 2 and the upper clamping plate 1. According to the size requirements of the through hole or threaded hole on the small parts design drawing, control the extension length of the steel ruler 8. After determining the length, turn the bolt 3, and the bolt head of the bolt 3 presses the upper clamping plate 1 down until the steel ruler 8 is clamped between the lower clamping plate 2 and the upper clamping plate 1 to prevent the steel ruler 8 from moving between the lower clamping plate 2 and the upper clamping plate 1.

[0040] It can be seen from this view that the through hole 11 opened in advance on the upper clamping plate 1 is not located in the middle of the upper and lower sides of the upper clamping plate 1, but the through hole 11 is opened at a slightly upper position, that is, the axis of the through hole 11 is located above the transverse symmetry line of the upper clamping plate 1. In this way, for the case of an upper clamping plate 1 with a larger width, the bearing 4 can also leak out to prevent it from being blocked by the edges of the upper clamping plate 1 and the lower clamping plate 2.

[0041] Before use, first adjust the extension length of the steel ruler 8 according to the size on the design drawing of the part. Since the steel ruler 8 has scale lines on it, the scale line that coincides with the upper edge of the upper clamping plate 1 is the extension length of the steel ruler. After determining the extension length, fix the steel ruler by tightening the round nut 7. The bearing of the utility model is contacted to the lower side of the workpiece 10. Since the side of the workpiece 10 is also a plane, the bearing can roll on the side of the workpiece 10. The steel part engraving pen is pressed against the upper edge of the steel ruler 8. By moving the utility model left and right, as shown by the arrow, the upper and lower positioning and marking work of the center of all the through holes or threaded holes processed in the workpiece can be achieved. In the same way, the bearing is contacted to the left side of the workpiece 10, and the steel part engraving pen is pressed against the upper edge of the steel ruler 8. By moving the utility model left and right, as shown by the upper and lower arrows, the left and right positioning and marking work of the center of all the through holes or threaded holes processed in the workpiece 10 can be achieved. The point where the two lines intersect each other is the center of the through hole or threaded hole to be processed. After positioning is completed, tap it with a carbide drill bit. After marking, the operator can directly use a hand-held electric drill to process it, thereby ensuring the position requirements of the through hole or threaded hole.

[0042] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the utility model. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A marking tool for small parts processing, characterized in that: Through holes are respectively provided on the left and right sides of the upper clamping plate; two threaded holes are provided on the lower clamping plate at positions corresponding to the above-mentioned through holes; bolts respectively pass through the through holes on the upper clamping plate and are screwed into the threaded holes on the lower clamping plate; a rotatable roller is installed on the part of the bolt extending out of the lower clamping plate; a round nut is screwed onto the bolt, and the round nut supports the roller; a steel ruler with scale lines is inserted into the gap between the lower clamping plate and the upper clamping plate; the bolt head presses the upper clamping plate, and the steel ruler is clamped between the lower clamping plate and the upper clamping plate.

2. A marking tool for small parts processing as claimed in claim 1, characterized in that: The roller is a rolling bearing.

3. A marking tool for small parts processing as claimed in claim 1, characterized in that: A locking washer is put onto the bolt, and a round nut presses the locking washer.

4. A marking tool for small parts processing as claimed in claim 1, characterized in that: The axis of the through hole on the upper pressing plate is located above the transverse symmetry line of the upper pressing plate.

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