CN109333114B - A jig for machining inclined holes - Google Patents

Abstract

The invention discloses a jig for processing inclined holes, and relates to a jig, which comprises an adjustable base and a jig main body movably arranged on the upper surface of the adjustable base; the upper surface of the adjustable base is obliquely arranged, and the adjustable base also comprises a fixing piece used for detachably fixing the jig main body; when the fixing piece is used for fixing the workpiece, the design central line of at least one inclined hole to be machined on the workpiece is in a vertical state. The jig for processing the inclined hole, provided by the invention, has the advantages of wide application range, strong universality, high positioning precision and convenience in operation, and not only can the processing quality of the inclined hole on a workpiece be improved, but also the processing efficiency of the inclined hole can be improved.

Description

A jig for machining inclined holes

technical field

The invention relates to a jig, in particular to a jig for processing inclined holes.

Background technique

During the machining process of the workpiece, the conventional holes on the workpiece can be processed by the CNC machining center. As shown in Figure 1, a workpiece with inclined holes is provided in the figure. The top of the workpiece has a conical structure, the bottom of the workpiece is provided with an inner hole 1, and the top of the workpiece is provided with a special inclined hole 2 for the hot runner. The hole 2 is symmetrically provided with two places on the workpiece at an interval of 180°, and the two inclined holes 2 are both communicated with the inner hole 1; at the same time, a shoulder 3 is also formed on the outer side wall of the workpiece, and the shoulder 3 is close to the bottom of the workpiece. .

In the actual machining process, the inner hole 1 at the bottom of the workpiece can be processed with the help of an ordinary three-axis machining center; however, for the two inclined holes 2 at the top of the workpiece, it is difficult for an ordinary three-axis machining center to achieve accurate machining; and, during the machining process In the process, the staff often needs to disassemble and assemble the workpiece twice in order to machine two inclined holes 2 on the workpiece at the same time. It can be seen that, using conventional technical means, not only is it difficult to guarantee the machining quality of the inclined hole 2 on the workpiece, but also the machining efficiency is relatively low, which needs to be improved urgently.

SUMMARY OF THE INVENTION

In view of the above technical problems, the purpose of the present invention is to provide a jig for processing inclined holes, which utilizes an adjustable base and a main body of the jig arranged on the adjustable base to ensure the processing quality of inclined holes and improve the processing efficiency of inclined holes.

For achieving the above object, the present invention provides the following technical solutions:

A jig for processing an inclined hole, comprising an adjustable base and a jig main body movably arranged on the upper surface of the adjustable base; the upper surface of the adjustable base is inclined and arranged, and the adjustable base further includes a jig for adjustable base. The fixing piece for fixing the main body of the jig is removed; when the fixing piece fixes the workpiece, the design center line of at least one inclined hole to be machined on the workpiece is in a vertical state.

By adopting the above technical solutions, in actual work, the workpiece is fixed on the main body of the fixture; when the main body of the fixture is placed on the adjustable base, the fixture can effectively fix the main body of the fixture, thereby indirectly ensuring the stability of the workpiece during processing sex. At this time, the design center line of at least one inclined hole to be machined on the workpiece is vertical, which means that the inclined hole can be formed on the workpiece along the design center line of the inclined hole by a common three-axis machining center. When the machining of one of the inclined holes is completed, the fixing part releases the main body of the fixture, and the staff can directly rotate the main body of the fixture on the adjustable base by 180 degrees, so that the design center line of the other inclined hole to be machined on the workpiece becomes vertical. Straight state, to meet the conditions of ordinary three-axis machining center for accurate hole machining. In this way, the operation of repeatedly disassembling and assembling the workpiece is saved, and the difficulty of machining the inclined hole is reduced, thereby not only greatly improving the machining quality of the inclined hole on the workpiece, but also greatly improving the machining efficiency of the inclined hole in the workpiece.

The present invention is further provided that: the adjustable base includes a base that is arranged horizontally; the fixing member is a permanent magnet suction cup for receiving the main body of the fixture, and the permanent magnetic suction cup is obliquely arranged on the base.

By adopting the above technical solution, when the fixture body is placed on the adjustable base, the permanent magnet chuck can effectively fix the fixture body on the adjustable base after magnetization; at this time, the fixture body is tilted and kept stable .

The present invention is further provided that: one side edge of the bottom of the permanent magnet suction cup and the upper side of the base are arranged in rotation; the adjustable base is also provided with a locking assembly for detachably fixing the permanent magnet suction cup.

By adopting the above technical solution, the permanent magnet suction cup is rotatably connected to the base, and when the locking assembly is released, the worker can rotate the permanent magnet suction cup to adjust the inclination angle of the permanent magnet suction cup. In this way, it can not only ensure that the design center line of the inclined hole to be machined on the workpiece can be accurately maintained in a vertical state, but also can adapt to the processing requirements of different workpieces, which helps to expand the scope of application of the fixture and enhance its practicality and efficiency. Universality.

The present invention further provides that: the locking assembly includes a connecting rod, one end of the connecting rod is hinged with the base, and the other side of the connecting rod is provided with an arc-shaped groove; the arc-shaped groove is provided with a locking The end of the locking screw is screwed into the permanent magnet suction cup.

By adopting the above technical solution, after the locking screw is loosened, the permanent magnet chuck rotates on the base; during the rotation of the permanent magnet chuck, the locking screw can slide along the arc groove. After the angle adjustment of the permanent magnet suction cup is completed, tighten the locking screw, and the locking screw will press against the connecting rod, thereby hingedly fixing the permanent magnet suction cup.

The present invention is further provided as follows: the upper side of the adjustable base is also fixed with a limit block, and the limit block is provided at least one on each of two adjacent side walls of the adjustable base; when the fixture body is in a fixed state and at least two adjacent side walls of the fixture body are respectively abutted against a limiting block.

By adopting the above technical solution, when the fixture body is placed on the adjustable base, at least two adjacent side walls of the fixture body are respectively abutted with limit blocks, so that the effective operation of the fixture body on the adjustable base is realized. Positioning, indirectly improve the accuracy of workpiece positioning, thereby improving the processing quality of the workpiece.

The present invention further provides that: the top of the adjustable base is evenly formed with anti-skid lines.

By adopting the above technical solution, the anti-skid pattern can effectively prevent the main body of the fixture from sliding on the adjustable base, and ensure the stability of the workpiece on the main body of the fixture.

The present invention is further provided as follows: the jig main body includes a bottom plate for abutting the upper surface of the adjustable base, and the side of the bottom plate facing away from the adjustable base is provided with an embedding groove for embedding the bottom of the workpiece; the jig main body It also includes a pressure plate detachably fixed on the side of the bottom plate away from the adjustable base, and a side of the pressure plate close to the bottom plate is provided with a through hole for passing the workpiece; when the pressure plate and the bottom plate are fixed, the lower side of the pressure plate is connected to the workpiece. The shoulder on the top abuts and makes the bottom of the workpiece abut against the bottom of the mounting groove.

By adopting the above technical solution, during operation, the workpiece is embedded in the fitting groove; when the pressure plate is covered on the bottom plate, the upper side of the workpiece is pierced with a penetration hole, and the lower side of the pressure plate is pressed against the shoulder on the workpiece, thereby pressing the workpiece against the workpiece. It is tightly attached to the bottom of the mounting groove to realize the fixation of the workpiece.

The present invention is further provided that: a side of the bottom plate for abutting against the adjustable base is provided with a chip removal hole, and the chip removal hole is communicated with the assembling groove.

By adopting the above technical solution, the iron chips generated during the machining of the inclined hole can be discharged through the inner hole and the chip discharge hole, so as to ensure the normal operation of the tool.

The present invention is further provided as follows: the bottom plate is provided with a plurality of lower pin holes, the pressure plate is provided with a plurality of upper pin holes, and the upper pin holes and the lower pin holes are arranged in a one-to-one correspondence; Each of them can be detachably fixed with a positioning pin for inserting and matching with each upper pin hole.

By adopting the above technical solution, the positioning pins are inserted and matched with the upper pin holes, so as to achieve precise positioning of the bottom plate and the pressing plate, so as to ensure that the pressing plate can be accurately aligned with the bottom plate and the positioning accuracy of the workpiece.

The present invention is further provided as follows: each of the lower pin holes are respectively arranged on opposite sides of the bottom plate, and each of the upper pin holes are respectively arranged on the opposite sides of the pressure plate; the opposite two corners of the bottom plate and the opposite sides of the pressure plate are respectively arranged. Positioning chamfers are provided at both corners.

By adopting the above technical solution, each lower pin hole and each upper pin hole are arranged on opposite sides of the fixture body. When the pressing plate turns 90 degrees relative to the bottom plate, the positioning pins on the bottom plate will not be able to align with the upper pin holes; , when the cover angle of the pressure plate relative to the bottom plate is wrong, the positioning chamfer on the pressure plate and the bottom plate cannot be aligned, which means that the cover angle of the pressure plate is wrong. In this way, it is ensured that the worker can correctly cover the pressing plate on the base plate, which can not only improve the convenience of the worker's operation, but also indirectly improve the positioning accuracy of the workpiece.

To sum up, the present invention has the following beneficial effects:

1. Fix the workpiece by means of the main body of the jig on the adjustable base, and set the upper surface of the adjustable base to incline, so that the design center line of at least one inclined hole to be machined on the workpiece is in a vertical state, which meets the processing requirements of ordinary three-axis machining centers. requirements, reduce the difficulty of machining the inclined hole on the workpiece, indirectly improve the machining quality of the inclined hole on the workpiece, and greatly improve the machining efficiency of the inclined hole;

2. The main body of the jig is fixed by the permanent magnet chuck, and the main body of the jig is effectively limited with each limit block, which not only ensures the positioning accuracy of the workpiece, but also greatly improves the convenience of operation;

3. By rotating the permanent magnet suction cup on the base, and cooperating with the locking assembly, the permanent magnet suction cup can be detached and fixed, while ensuring the stability of the workpiece, the adjustment of the inclination angle of the fixture body can be indirectly realized, which can not only further improve the workpiece It can also effectively expand the scope of application of the jig for slanted hole processing, and enhance its practicability and versatility.

Description of drawings

Fig. 1 is the cross-sectional structure schematic diagram of a kind of workpiece with inclined hole in the background technology;

FIG. 2 is a schematic axonometric view of the overall structure of an embodiment of the present invention;

Fig. 3 is the axonometric schematic diagram of the adjustable base in one embodiment of the present invention;

4 is a schematic diagram of an explosion structure of a fixture body in an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a fixture body in an embodiment of the present invention.

Reference signs: 1, inner hole; 2, inclined hole; 3, shoulder; 4, adjustable base; 41, base; 42, permanent magnet suction cup; 421, anti-skid pattern; ;511, mounting groove; 512, lower pin hole; 513, chip removal hole; 52, pressure plate; 521, through hole; 522, upper pin hole; 523, countersunk head bolt hole; Components; 71, connecting rod; 711, arc groove; 72, locking screw; 8, limit block; 9, locating pin; 10, locating chamfer.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 2 , a jig for processing inclined holes includes an adjustable base 4 and a jig main body 5 arranged on the adjustable base 4 . In actual work, the adjustable base 4 is fixed on the worktable of the machining center, and the workpiece to be processed is fixed in the fixture body 5 .

Referring to Figures 2-3, the adjustable base 4 includes a base 41, and the base 41 can be horizontally fixed on the worktable of the machining center. The upper side of the base 41 is provided with a permanent magnet suction cup 42, and the permanent magnet suction cup 42 has a square block structure as a whole, and the upper surface is uniformly formed with anti-skid lines 421; in order to install the permanent magnetic suction cup 42, the edge of the upper surface of the base 41 is rotated at one side A rotating shaft 6 is provided, and the base 41 forms a rotational connection with the bottom side edge of the permanent magnet chuck 42 through the rotating shaft 6, so that the permanent magnet chuck 42 can be turned up and down around the rotating shaft 6 to realize the adjustment of the inclination angle of the permanent magnet chuck 42. The side of the bottom of the permanent magnet suction cup 42 away from the rotating shaft 6 is also fixed with a support shaft, and the support shaft and the rotating shaft 6 are arranged in parallel; when the permanent magnet suction cup 42 is turned to a horizontal state, the support shaft can effectively support the permanent magnet suction cup 42 away from the rotating shaft 6. On one side, the stability of the permanent magnet chuck 42 is ensured. At the same time, the adjustable base 4 is also provided with a locking assembly 7 for detachably fixing the permanent magnet suction cup 42 . In actual work, when the permanent magnet chuck 42 is in a fixed state, the fixture body 5 can be placed on the permanent magnet chuck 42; when the permanent magnet chuck 42 is magnetized, the permanent magnet chuck 42 can fully fix the fixture body 5, so as to effectively The stability of the workpiece is ensured; therefore, the permanent magnet chuck 42 constitutes a fixing piece for detachably fixing the fixture body 5 in this embodiment.

As shown in FIG. 3 , one set of locking assemblies 7 may be provided on opposite sides of the adjustable base 4 . The locking assembly 7 includes a connecting rod 71, one end of the connecting rod 71 is hinged with the base 41, and the side of the connecting rod 71 away from the hinge point of the connecting rod 71 and the base 41 is also horizontally provided with an arc-shaped groove 711; A locking screw 72 is provided therethrough, and the end of the locking screw 72 is screwed into the permanent magnet suction cup 42 . When the locking screw 72 is tightened, the head of the locking screw 72 presses against the connecting rod 71 , thereby indirectly realizing the fixing of the permanent magnet suction cup 42 on the base 41 .

Referring to FIG. 3 , the above-mentioned fixture body 5 may have a rectangular block structure as a whole; in order to ensure the positioning accuracy of the fixture body 5 on the adjustable base 4 , a limit block 8 is also provided on the upper side of the adjustable base 4 ; the limit block 8 can be fixed on the side wall of the permanent magnet chuck 42 by bolts, and the limit block 8 can be provided with two blocks on each of the two adjacent side walls of the permanent magnet chuck 42; The limiting blocks 8 can be symmetrically arranged along the length direction of the side wall. The upper part of each limit block 8 protrudes from the upper surface of the permanent magnet chuck 42; after the fixture body 5 is placed on the permanent magnet chuck 42, before the permanent magnet chuck 42 is magnetized, the staff can move the fixture body 5. The two adjacent side walls of the jig main body 5 are respectively pressed against the respective sets of limit blocks 8, so that the precise positioning of the jig main body 5 on the adjustable base 4 can be realized.

Referring to Figures 4-5, the fixture body 5 includes a bottom plate 51 for abutting the upper surface of the permanent magnet chuck 42. The side of the bottom plate 51 facing away from the permanent magnet chuck 42 is provided with a mounting groove 511. The mounting groove 511 is mainly used for The workpieces to be processed are embedded; in order to improve the processing efficiency, several mounting grooves 511 can be evenly arranged on the bottom plate 51; meanwhile, the mounting grooves 511 can be set to different sizes to meet the processing requirements of workpieces of different specifications. The bottom plate 51 is also vertically provided with lower pin holes 512, two or three or more of the lower pin holes 512 can be provided on opposite sides of the bottom plate 51; A positioning pin 9 is fixed. The side of the bottom plate 51 for abutting against the permanent magnet chuck 42 is also provided with a chip removal hole 513 . The chip removal hole 513 is arranged in a one-to-one correspondence with the mounting groove 511 , and each chip removal hole 513 is connected to the corresponding mounting groove 511 respectively. . Moreover, positioning chamfers 10 are formed at two opposite corners of the bottom plate 51 .

The fixture body 5 also includes a pressing plate 52 covering the bottom plate 51 on the side away from the permanent magnet chuck 42 . The pressing plate 52 is vertically pierced with through holes 521 . The upper pin holes 522 are also vertically penetrated on the pressing plate 52, and the upper pin holes 522 are arranged in a one-to-one correspondence with the lower pin holes 512 on the bottom plate 51; when the pressing plate 52 is pressed against the bottom plate 51, the upper pin holes 522 can be respectively facing Corresponding to the lower pin hole 512 . At the same time, a number of countersunk head bolt holes 523 are evenly arranged on the pressure plate 52; when the pressure plate 52 is covered on the bottom plate 51, each countersunk head bolt hole 523 is provided with fastening screws one by one; The pressing plate 52 is sufficiently fixed on the bottom plate 51 . Positioning chamfers 10 are also formed on the opposite two corners of the pressing plate 52 ; when the pressing plate 52 is properly covered on the bottom plate 51 , the positioning chamfers 10 on the bottom plate 51 and the pressing plate 52 are just aligned.

In actual work, the bottom of the workpiece is embedded in the fitting groove 511; when the pressing plate 52 is covered on the bottom plate 51, the lower side of the pressing plate 52 is in contact with the shoulder 3 on the outer side wall of the workpiece, and the workpiece is abutted on the bottom plate 51. Fitting into the groove 511, thereby realizing the fixation of the workpiece. During this process, each positioning pin 9 on the bottom plate 51 is inserted into each upper pin hole 522 on the pressing plate 52; 52 to achieve effective positioning.

The working principle of this embodiment is as follows: in actual work, the worker embeds each workpiece in each mounting groove 511 on the bottom plate 51 , and then adjusts the pressing plate 52 so that the positioning chamfer 10 on the pressing plate 52 is aligned with the bottom plate 51 . Then, the pressure plate 52 is covered on the bottom plate 51, and the positioning pins 9 on the bottom plate 51 are respectively inserted into the corresponding upper pin holes 522; Fixing; at this time, the pressing plate 52 presses the workpieces in the corresponding mounting grooves 511 respectively, so as to realize the effective fixing of the workpieces. Subsequently, the jig body 5 with the workpiece fixed is placed on the permanent magnet chuck 42, and the adjacent two side walls of the jig body 5 are respectively abutted against the respective limit blocks 8; then, the permanent magnet chuck 42 is subjected to After magnetization, the fixture body 5 is completely fixed on the permanent magnet chuck 42 .

After completing the above operations, the worker can loosen the locking screw 72, and then rotate the permanent magnet chuck 42 until the design centerline of the inclined hole 2 to be machined on the workpiece becomes vertical, and then immediately tighten the locking screw 72. Until the positioning of the workpiece is completely completed, the staff can start the three-axis machining center and complete the machining of one of the inclined holes 2 on the workpiece with the help of the three-axis machining center.

When the first inclined hole 2 on the workpiece is processed, the worker can cancel the magnetization of the permanent magnet chuck 42, and re-magnetize the permanent magnet chuck 42 after rotating the fixture body 5 by 180 degrees, thereby fixing the fixture again Subject 5. Then, the machining of the upper and lower inclined holes 2 of the workpiece can be started. In this way, the processing difficulty of the upper inclined hole 2 of the workpiece is reduced, the processing quality of the upper inclined hole 2 of the workpiece is indirectly improved, and the processing efficiency of the inclined hole 2 is greatly improved.

This specific embodiment is only an explanation of the present invention, and it does not limit the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as needed after reading this specification, but as long as the rights of the present invention are used All claims are protected by patent law.

Claims (8)

1. A jig for machining inclined holes, characterized in that it comprises an adjustable base (4) and a jig main body (5) movably arranged on the upper surface of the adjustable base (4); the adjustable base (4) It comprises a base (41) and a permanent magnet suction cup (42) detachably fixed on the base (41), the upper surface of the permanent magnet suction cup (42) is inclined and the permanent magnet suction cup (42) is formed The fixture body (5) is detachably fixed to the fixture body; when the fixture body (5) fixes the workpiece, the design centerline of at least one inclined hole (2) to be machined on the workpiece is in a vertical state; The fixture main body (5) includes a bottom plate (51) for abutting the upper surface of the adjustable base (4), and a surface of the bottom plate (51) facing away from the adjustable base (4) is provided with a bottom plate for embedding the workpiece bottom. an installation groove (511); the fixture body (5) further includes a pressure plate (52) detachably fixed on the side of the bottom plate (51) away from the adjustable base (4), and the pressure plate (52) is close to the bottom plate (51) ) is provided with a through hole (521) for piercing the workpiece; when the pressing plate (52) is fixed with the bottom plate (51), the lower side of the pressing plate (52) is in contact with the shoulder (3) on the workpiece. Connect and make the bottom of the workpiece abut against the bottom of the mounting groove (511). 2 . The jig for machining inclined holes according to claim 1 , wherein the bottom side edge of the permanent magnet suction cup ( 42 ) and the upper side of the base ( 41 ) are arranged in rotation; the adjustable The base (4) is also provided with a locking assembly (7) for detachably fixing the permanent magnet suction cup (42). 3 . The jig for machining inclined holes according to claim 2 , wherein the locking assembly ( 7 ) comprises a connecting rod ( 71 ), and one end of the connecting rod ( 71 ) is connected to the base ( 41 ). 4 . ) hinged, the other side of the connecting rod (71) is provided with an arc-shaped groove (711); the arc-shaped groove (711) is provided with a locking screw (72), and the locking screw (72) The end is screwed into the permanent magnet suction cup (42). 4. A jig for machining inclined holes according to claim 1 or 3, characterized in that a limit block (8) is also fixed on the upper side of the adjustable base (4), and the limit block (8) ) at least one of the two adjacent side walls of the adjustable base (4) is provided; when the fixture body (5) is in a fixed state, there are at least two adjacent side walls on the fixture body (5). Abutting a limit block (8) respectively. 5 . The jig for processing inclined holes according to claim 1 or 3 , characterized in that, the top of the adjustable base ( 4 ) is also uniformly formed with anti-skid patterns ( 421 ). 6 . 6 . The jig for machining inclined holes according to claim 1 , wherein a chip removal hole ( 513 ) is provided on the side of the bottom plate ( 51 ) for abutting against the adjustable base ( 4 ). 7 . , the chip removal hole (513) is communicated with the mounting groove (511). 7 . The jig for machining inclined holes according to claim 1 , wherein a plurality of lower pin holes ( 512 ) are arranged on the bottom plate ( 51 ), and a plurality of upper pin holes ( 512 ) are arranged on the pressing plate ( 52 ). 8 . Pin holes (522), the upper pin holes (522) and the lower pin holes (512) are arranged in a one-to-one correspondence; each of the lower pin holes (512) can be detachably fixed with ) to insert the matching locating pin (9). 8 . The jig for machining inclined holes according to claim 7 , wherein each of the lower pin holes ( 512 ) is respectively disposed on opposite sides of the bottom plate ( 51 ), and each of the upper pin holes ( 512 ). 522) are respectively arranged on opposite sides of the pressing plate (52); positioning chamfers (10) are provided at the opposite two corners on the bottom plate (51) and at the opposite two corners on the pressing plate (52).