CN220218484U - Portable multifunctional round hole self-centering scribing instrument - Google Patents

Abstract

The utility model relates to the technical field of bench workers' scribing ruler, in particular to a portable multifunctional round hole self-centering scribing instrument, which solves the problem that in the prior art, the scribing instrument cannot scribe on the outer circular surface of a workpiece. The scribing instrument comprises a centering component and a scribing component, the centering component is connected with the scribing component through a supporting component, the supporting component is rotationally connected with the centering component, the scribing component is slidably arranged on the supporting component, the supporting component comprises a horizontal graduated scale and a vertical graduated scale, one end of the horizontal graduated scale is rotationally connected with the centering component, the upper end of the vertical graduated scale is slidably connected with the horizontal graduated scale, and the scribing component is slidably arranged on the vertical graduated scale. The utility model has the beneficial effects that: the scribing assembly corresponds to the outer circular surface of the workpiece, namely the scribing assembly can scribe on the outer circular surface of the workpiece, and the scribing instrument is positioned and fixed by adopting the centering assembly, so that accurate scribing is ensured.

Description

Portable multifunctional round hole self-centering scribing instrument

Technical Field

The utility model relates to the technical field of bench workers' scribing ruler, in particular to a portable multifunctional round hole self-centering scribing instrument.

Background

Currently, in machining enterprises, a machining master positions the center of an inner hole of a workpiece, and when scribing lines on the whole body of the workpiece to determine drilling position points, the workpiece is clamped on a dividing head or a dividing disc by a commonly adopted method, and then the dividing head or the dividing disc is rotated to carry out dividing scribing. Secondly, some machining enterprises with good production conditions can choose to process on a four-axis numerical control machining center. However, with the increase of large-scale and single-piece small-batch workpieces in recent years, higher requirements are put on machining production of manufacturing enterprises, so that the enterprises need to purchase large-scale four-axis numerical control machining centers, and the production cost of the enterprises is increased. In addition, because the middle and large workpieces exceed the clamping working range of the dividing head or the dividing disc, a master worker is required to carry out the scribing by means of the working tools such as a calculator, a vernier caliper, a vernier height gauge and the like, and the scribing tool used by the master worker has single function and poor precision, so that the scribing efficiency and the scribing precision are low.

The patent with the publication number of CN212071914U discloses a round hole self-centering digital display scribing instrument, which comprises a positioning assembly, a centering assembly, a scribing assembly and an indexing assembly, wherein the positioning assembly comprises a supporting rod, the centering assembly comprises an equal angle centering block and a rotating shaft which are connected, the supporting rod is in hinged fit with the equal angle centering block, the rotating shaft is connected with a rotating handle and is rotationally connected with a graduated scale, a digital display indexing device is arranged between the rotating shaft and the graduated scale, a digital display vernier device is arranged on the graduated scale in a sliding manner, and the digital display vernier device is connected with an adjustable scriber. The scriber can scribe on the workpiece, but can scribe on the end face of the workpiece only, cannot scribe on the outer circular surface of the workpiece, and cannot meet the use requirement.

Disclosure of Invention

The utility model provides a portable multifunctional round hole self-centering scribing instrument, which solves the problem that the scribing instrument in the prior art cannot scribe on the outer circular surface of a workpiece.

The technical scheme of the utility model is realized as follows:

the utility model provides a portable multi-functional round hole is from centering marking off appearance, includes centering subassembly and marking off subassembly, and centering subassembly passes through supporting component and marking off subassembly to be connected, and supporting component rotates with the centering subassembly to be connected, and marking off subassembly slides and sets up on supporting component, and supporting component includes horizontal scale and vertical scale, and the one end and the centering subassembly rotation of horizontal scale are connected, and the upper end and the horizontal scale sliding connection of vertical scale marking off subassembly slide setting on vertical scale. The horizontal graduated scale rotates the relative position of adjustment vertical graduated scale and work piece, and the scribing component corresponds with the outer disc of work piece, and the scribing component can be on the outer disc of work piece to the scribing instrument adopts centering component to fix a position, guarantees to mark a line accurately.

The digital display dividing instrument is arranged on the horizontal dividing rule. And the digital display graduator can determine the rotating angle of the horizontal graduated scale, and is convenient for carrying out graduation marking.

The auxiliary support assembly comprises a sliding sleeve arranged on the horizontal graduated scale in a sliding manner and a roller matched with the end face of the workpiece, a support pipe is fixedly arranged on the sliding sleeve, a telescopic rod is inserted into the support pipe, a support frame is fixedly arranged at the end part of the telescopic rod, and the roller is rotatably arranged on the support frame. The auxiliary supporting component takes the end face of the workpiece as a support, and provides stable support for the horizontal graduated scale, so that the horizontal graduated scale is kept stable in the rotation process.

The digital display dividing instrument comprises a shell, wherein the shell is arranged on a horizontal dividing ruler through a fixing screw, and keys and a digital display screen are arranged on the shell.

The scribing assembly comprises a scriber and a vertical vernier, the vertical vernier is arranged on the vertical vernier in a sliding mode, a spring sleeve is fixedly arranged on the vertical vernier, the scriber is arranged in the spring sleeve in a penetrating mode, a spring is sleeved on the scriber and located in the spring sleeve, and a top cap is connected with the tail portion of the scriber in a threaded mode.

And a fastening screw II is arranged on the vertical vernier and penetrates through the side wall of the vertical vernier to be in contact with the vertical graduated scale to be tightly propped. And after the vertical vernier is moved to a designated position, the fastening screw II is screwed down for fixing.

The centering assembly comprises a lower end cover and an upper end cover, the lower end cover and the upper end cover are mutually buckled to form a cavity, a rotary handle shaft is arranged in the cavity in a rotating mode, the rotary handle shaft is vertically arranged, a centering block is connected to the rotary handle shaft and located in the cavity, a plurality of connecting rods extending out of the cavity are hinged to the centering block, and the end portions of the connecting rods are matched with the inner walls of round holes of the workpiece. The rotary handle shaft is connected with the lower end cover and the upper end cover through bearings, and the rotary handle shaft can be rotated forward or reversely to control the connecting rod to extend or retract, so that the scribing instrument is suitable for inner walls of workpieces with different diameters.

The end part of the connecting rod is connected with a supporting table, and a disc structure contacted with the inner wall of the workpiece is arranged on the supporting table. The disc structure ensures that the distance between the supporting table and the inner wall of the workpiece is unchanged.

The cavity is internally provided with guide members in a rotating way, the rotating axes of the guide members are parallel to the rotating axial direction of the rotating handle shaft, the guide members are in one-to-one correspondence with the connecting rods, through holes are formed in the guide members, and the connecting rods penetrate through the through holes.

An indexing dial is arranged on the upper surface of the upper end cover, and an indexing indicator is arranged on the horizontal scale and is arranged vertically.

The utility model has the beneficial effects that: the scribing assembly corresponds to the outer circular surface of the workpiece, namely the scribing assembly can scribe on the outer circular surface of the workpiece, and the scribing instrument is positioned and fixed by adopting the centering assembly, so that accurate scribing is ensured.

The scribing instrument has the advantages of ingenious structural design, convenience in carrying and simplicity in operation, can accurately and rapidly realize self-centering of the round hole of the workpiece, rapidly scribe, index and determine the drilling position point on the periphery of the workpiece, and improves the scribing efficiency of a master of a fitter. The round hole self-centering scribing instrument adopts a vernier for scribing, the graduation adopts digital display, and an auxiliary supporting component is designed, so that the working stability and the scribing precision of the scribing instrument are improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a portable multifunctional circular hole self-centering scribing instrument.

Fig. 2 is a cross-sectional view of the scribing instrument.

Fig. 3 is a top view of the scriber.

Fig. 4 is a schematic structural view of a centering assembly of the scribing instrument.

Fig. 5 is a schematic view of the structure of the scriber.

1. The support table, 2, jackscrew, 3, connecting rod, 4, connecting screw, 5, guide, 6, lower bearing, 7, lower end cap, 9, key, 10, pivot pin, 11, centering block, 12, gland nut, 13, upper bearing, 14, upper end cap, 15, rotating handle shaft, 16, support shaft, 17, rotary shaft, 18, digital display gradiometer, 19, horizontal scale, 20, sliding sleeve, 21, support tube, 22, telescopic rod, 23, support frame, 24, connecting shaft, 25, roller, 28, horizontal vernier, 29, horizontal stop, 30, vertical vernier, 31, vertical vernier, 32, top cap, 33, vertical stop, 34, spring, 35, spring sleeve, 36, scratch pin, 37, fastening screw II, 40, fastening screw I, 41, housing, 42, display screen 43, key, 44, fixing screw, 45, graduated scale, 46, indexing indicator pin, 47, fastening screw III.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.

Embodiment 1, as shown in fig. 1, a portable multifunctional round hole self-centering scribing instrument comprises a centering component arranged in a round hole of a workpiece and a scribing component arranged on the outer side of the workpiece, wherein the centering component is connected with the scribing component through a supporting component, the supporting component is rotationally connected with the centering component, and the scribing component is arranged on the supporting component in a sliding manner. The centering assembly is positioned and fixed through the inner wall of the round hole of the workpiece, the self-centering function of the scribing instrument is realized, the centering assembly provides stable support for the scribing assembly through the supporting assembly after centering, the scribing assembly is used for scribing on the outer circle of the workpiece, the supporting assembly rotates and the scribing assembly moves up and down along the supporting assembly, the relative position of the scribing assembly and the outer circle of the workpiece can be adjusted, and scribing is realized at different positions of the outer circle of the workpiece.

Further, the supporting component comprises a horizontal graduated scale 19 and a vertical graduated scale 30, one end of the horizontal graduated scale 19 is rotationally connected with the centering component, the upper end of the vertical graduated scale 30 is in sliding connection with the horizontal graduated scale 19, in particular, the upper end of the vertical graduated scale 30 is fixedly connected with a horizontal vernier scale 28, a fastening screw I40 is arranged on the horizontal vernier scale 28, the fastening screw I40 penetrates through the side wall of the horizontal vernier scale 28 to be in compression fit with the horizontal graduated scale 19, and after the vertical graduated scale 30 moves to a proper position, the fastening screw I40 is screwed down, so that the relative position of the horizontal graduated scale 19 and the vertical graduated scale 30 is fixed, and the scribing component is arranged on the vertical graduated scale 30 in a sliding manner; an auxiliary supporting component matched with the end face of the workpiece is arranged on the horizontal graduated scale 19 in a sliding mode, and a digital display graduating instrument 18 is arranged on the horizontal graduated scale 19. The auxiliary supporting component takes the end face of the workpiece as a support to provide stable support for the horizontal graduated scale 19, so that the horizontal graduated scale 19 is kept stable in the rotating process.

Further, the end of the horizontal scale 19 is provided with a horizontal stopper 29, and the horizontal stopper 29 can prevent the horizontal vernier 28 or the auxiliary supporting member from being separated from the horizontal scale 19.

Further, the auxiliary support assembly comprises a sliding sleeve 20 arranged on the horizontal graduated scale 19 in a sliding manner and a roller 25 matched with the end face of the workpiece, a support tube 21 is fixedly arranged on the sliding sleeve 20, a telescopic rod 22 is inserted into the support tube 21, a support frame 23 is fixedly arranged at the end part of the telescopic rod 22, the roller 25 is rotatably arranged on the support frame 23, and specifically, the roller 25 is connected with the support frame 23 through a connecting shaft 24. The slide sleeve 20 is provided with the fastening screw III 48, the fastening screw III 48 penetrates through the side wall of the slide sleeve 20 to be matched with the horizontal graduated scale 19, the support tube 21 is provided with the locking screw 47, the locking screw 47 penetrates through the side wall of the support tube 21 to lock the telescopic rod 22, specifically, when the scribing instrument is used, the slide sleeve 20 is used for adjusting the relative position of an auxiliary support assembly and the end face of a workpiece, then the telescopic rod 22 is adjusted to extend out of the length of the support tube 22, the roller 25 is in contact with the end face of the workpiece, and finally the fastening screw III 48 and the locking screw 47 are screwed, so that the position of the slide sleeve 20 on the horizontal graduated scale 19 is fixed, the length of the telescopic rod 22 extending out of the support tube 21 is fixed, the roller 25 is further used for providing stable support for the horizontal graduated scale 19 through the support tube 21 and the telescopic rod 22, and therefore the horizontal graduated scale 19 is guaranteed to be kept stable in the rotation process, and the scribing position of the scribing assembly is enabled to be accurate.

Further, the digital display graduating instrument 18 comprises a housing 41, the housing 41 is arranged on the horizontal graduated scale 19 through a fixing screw 44, and keys 43 and a digital display screen 42 are arranged on the housing 41. The horizontal graduated scale 19 is rotated to rotate around the center of the centering assembly, and the digital display graduating instrument 18 can display the rotation angle of the horizontal graduated scale 19, so that the accuracy of the scribing position is improved.

Embodiment 2 is different from embodiment 1 in that the scribing assembly comprises a scriber 36 and a vertical vernier 31, the vertical vernier 31 is slidably arranged on the vertical vernier 30, a spring sleeve 35 is fixedly arranged on the vertical vernier 31, the scriber 36 is arranged in the spring sleeve 35 in a penetrating manner, a spring 34 is sleeved on the scriber 36, the spring 34 is arranged in the spring sleeve 35, and a top cap 32 is connected with the tail of the scriber 36 in a threaded manner. The vertical vernier 31 is provided with a fastening screw II 37, and the fastening screw II 37 passes through the side wall of the vertical vernier 31 to be contacted with the vertical graduated 30 for tightly jacking. The vertical vernier 31 slides up and down to change the relative position of the scriber 36 and the end face of the workpiece, and after the position is adjusted, the fastening screw II 37 is screwed down to fix the relative position of the vertical vernier 31 and the hysteresis scale 30, so that the position of the scriber 36 is fixed, an operator pulls the top cap 32 and then releases the top cap, the scriber 36 moves towards the workpiece under the action of the spring 34, and the scriber 36 leaves marks on the excircle of the workpiece.

Further, a vertical stopper 33 is fixedly provided at the lower end of the vertical scale 30, and the vertical stopper 33 can prevent the vertical vernier 31 from being separated from the vertical scale 30.

Embodiment 3, with embodiment 1 or embodiment 2's difference lies in, centering subassembly includes bottom end cover 7 and upper end cover 14, bottom end cover 7 and upper end cover 14 lock each other forms the cavity, bottom end cover 7 and upper end cover 14 pass through connecting screw 4 and connect, the rotation is equipped with rotatory handle axle 15 in the cavity, rotatory handle axle 15 vertical arrangement is connected with centering piece 11 on the rotatory handle axle 15, centering piece 11 is located the cavity, the last articulated connecting rod 3 that has a plurality of stretching out the cavity of centering piece 11, the tip and the round hole inner wall cooperation of work piece of connecting rod 3. Specifically, the rotary handle shaft 15 is connected with the upper end cover 14 through the upper bearing 13, the rotary handle shaft 15 is connected with the lower end cover 7 through the lower bearing 6, and the rotary handle shaft 15 is connected with the centering block 11 through the key 9, the rotary handle shaft 15 can drive the centering block 11 to rotate, the guide piece 5 is arranged in the cavity in a rotating manner, the rotating axis of the guide piece 5 is parallel to the rotating axis of the rotary handle shaft 15, the guide piece 5 corresponds to the connecting rod 3 one by one, the connecting rod 3 is provided with a through hole, the connecting rod 3 is arranged in the through hole in a penetrating manner, and the guide piece 5 guides the extension or retraction of the connecting rod 3. In this embodiment, centering piece 11 is regular triangle structure, and the quantity of connecting rod 3 is three, and the tip of connecting rod 3 is articulated with the angular position of regular triangle structure, can drive connecting rod 3 and stretch out the cavity when centering piece 11 rotates, makes the tip of connecting rod 3 and the inner wall contact of work piece, realizes the automatic centering function of marking off appearance.

Further, the end of the connecting rod 3 is connected with a supporting table 1, and the supporting table 1 is provided with a disc structure which is contacted with the inner wall of the workpiece. Specifically, the connecting rod 3 is inserted into the supporting table 1 and fixed through the jackscrews 2, and the disc structure ensures that the supporting table 1 is stably contacted with the inner wall of the workpiece when the connecting rod 3 stretches out.

Further, an index dial 45 is provided on the upper surface of the upper end cap 14, and an index pointer 46 is provided on the horizontal scale 19, and the index pointer 46 is arranged vertically to the index dial 45. The compression nut 12 is connected to the rotating handle shaft 15 in a threaded manner, the compression nut 12 is located on the upper side of the upper end cover 7, the division dial 45 can be fixed in a compression manner by rotating the compression nut 12, stability of the division dial 45 in use is guaranteed, the rotation angle can be determined by the position of the division indication needle 46 pointing to the division dial 45 when the horizontal scale 19 is rotated, and therefore division operation is achieved.

Further, a supporting shaft 16 is fixedly connected to the horizontal graduated scale 19, and the supporting shaft 16 and the rotating handle shaft 15 are coaxially arranged, so that the horizontal graduated scale 19 rotates around the axis of the rotating handle shaft 15, and the scribing position is ensured to be accurate.

Embodiment 4 differs from embodiment 1 in that the horizontal scale 19 is slidably provided with a scribing assembly, and the scribing assembly is disposed towards the end face of the workpiece, that is, the scribing assembly can scribe on the end face of the workpiece, so that the scribing instrument can scribe on the end face and the outer circle of the workpiece at the same time, and the applicability of the scribing instrument is enhanced.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. The portable multifunctional round hole self-centering scribing instrument comprises a centering component and a scribing component, wherein the centering component is connected with the scribing component through a supporting component, the supporting component is rotationally connected with the centering component, and the scribing component is arranged on the supporting component in a sliding manner; the device is characterized in that the supporting component comprises a horizontal graduated scale (19) and a vertical graduated scale (30), one end of the horizontal graduated scale (19) is rotationally connected with the centering component, the upper end of the vertical graduated scale (30) is slidably connected with the horizontal graduated scale (19), and the scribing component is slidably arranged on the vertical graduated scale (30).

2. The portable multifunctional round hole self-centering scribing instrument according to claim 1, wherein an auxiliary supporting component is arranged on the horizontal graduated scale (19) in a sliding mode, and a digital display graduated instrument (18) is arranged on the horizontal graduated scale (19).

3. The portable multifunctional round hole self-centering scribing instrument according to claim 2, wherein the auxiliary supporting component comprises a sliding sleeve (20) and a roller (25) which are arranged on the horizontal graduated scale (19) in a sliding manner, a supporting tube (21) is fixedly arranged on the sliding sleeve (20), a telescopic rod (22) is inserted into the supporting tube (21), a supporting frame (23) is fixedly arranged at the end part of the telescopic rod (22), and the roller (25) is rotatably arranged on the supporting frame (23).

4. A portable multifunctional round hole self-centering scribing instrument according to claim 3, characterized in that the digital display graduation instrument (18) comprises a housing (41), the housing (41) is arranged on the horizontal graduation ruler (19) through a fixing screw (44), and a key (43) and a digital display screen (42) are arranged on the housing (41).

5. The portable multifunctional round hole self-centering scribing instrument according to any one of claims 1-4, wherein the scribing assembly comprises a scriber (36) and a vertical vernier (31), the vertical vernier (31) is slidably arranged on the vertical vernier (30), a spring sleeve (35) is fixedly arranged on the vertical vernier (31), the scriber (36) is arranged in the spring sleeve (35) in a penetrating manner, a spring (34) is sleeved on the scriber (36), the spring (34) is located in the spring sleeve (35), and the tail of the scriber (36) is fixed on the vertical vernier (31) through a top cap (32) in threaded connection.

6. The portable multifunctional round hole self-centering scribing instrument according to claim 5, wherein a fastening screw II (37) is arranged on the vertical vernier (31), and the fastening screw II (37) penetrates through the side wall of the vertical vernier (31) to be in contact with and tightly proped against the vertical vernier (30).

7. The portable multifunctional round hole self-centering scribing instrument according to any one of claims 1-4 and 6, wherein the centering assembly comprises a lower end cover (7) and an upper end cover (14), the lower end cover (7) and the upper end cover (14) are mutually buckled to form a cavity, a rotating handle shaft (15) is rotatably arranged in the cavity, the rotating handle shaft (15) is vertically arranged, a centering block (11) is connected to the rotating handle shaft (15), the centering block (11) is located in the cavity, and a plurality of connecting rods (3) extending out of the cavity are hinged to the centering block (11).

8. The portable multifunctional round hole self-centering scribing instrument according to claim 7, wherein the end part of the connecting rod (3) is connected with a supporting table (1), and a disc structure is arranged on the supporting table (1).

9. The portable multifunctional round hole self-centering scribing instrument according to claim 8, wherein a guide piece (5) is rotatably arranged in the cavity, the rotation axis of the guide piece (5) is parallel to the rotation axis of the rotating handle shaft (15), the guide piece (5) corresponds to the connecting rods (3) one by one, through holes are formed in the guide piece (5), and the connecting rods (3) are arranged in the through holes in a penetrating mode.

10. The portable multifunctional round hole self-centering scribing instrument according to claim 8 or 9, characterized in that an indexing dial (45) is provided on the upper surface of the upper end cap (14), an indexing indicator needle (46) is provided on the horizontal scale (19), and the indexing indicator needle (46) is arranged vertically to the indexing dial (45).