Positioning auxiliary clamp for positioning and clamping workpiece with open slot

Abstract

According to the positioning auxiliary clamp, a left positioning block and a right positioning block are arranged on the left side and the right side of the workpiece respectively, and the left positioning block and the right positioning block are coaxially fixed to a chuck shaft and a tailstock of a four-axis machining center respectively; hole groove positioning devices are arranged on the end faces of the ends, opposite to the workpiece, of the left positioning block and the right positioning block, the hole groove positioning devices are connected with the corresponding ends of a center hole and an open groove of the workpiece in a matched mode, and the workpiece is tightly abutted and fixed through the right positioning block and the left positioning block by adjusting the position of the tailstock. According to the utility model, the problem of workpiece clamping deformation caused by the arrangement of the open slot in the clamping process is avoided, the problem that the hole slot in the outer wall cannot be machined at high precision due to high clamping difficulty of the workpiece with the open slot is solved, and the clamp is simple in structure, novel in design, convenient and rapid to clamp and high in efficiency. On the premise of ensuring the overall dimension precision of the workpiece, the hole groove in the outer wall is precisely and reliably machined, the machining precision and the machining efficiency are improved, the consistency is good, the machining period is shortened, and the labor intensity is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to positioning auxiliary technical field, concretely relates to a kind of positioning auxiliary fixture for the positioning and clamping of workpiece with opening slot. BACKGROUND

[0002] As Figure 4 As shown in the workpiece 1, the outer contour shape is irregular, and the outer wall is also machined with opening slot 2 communicated with the center hole, when machining, first, the center hole and opening slot 2 are machined on the milled end face of workpiece 1, then the outer wall of workpiece 1 and the waist hole 3 and through hole 4 on the outer wall are machined, when clamping and positioning workpiece 1, because the outer contour of workpiece 1 is irregular and the outer wall is provided with opening slot 2, there is a certain difficulty in clamping and positioning, therefore, in order to reduce the machining difficulty of waist hole 3 and through hole 4 on the outer wall of workpiece 1, reduce the machining process, improve the positioning and clamping accuracy of workpiece 1, improve the machining efficiency, it is necessary to design a kind of positioning fixture for clamping and positioning workpiece 1. SUMMARY

[0003] The utility model solves the technical problem: provide a kind of positioning auxiliary fixture for the positioning and clamping of workpiece with opening slot, according to the structure characteristics of the workpiece to be machined, two left positioning block and right positioning block with hole and groove positioning device are designed on the end face of opposite end, provide conditions for the clamping and fixing of workpiece with opening slot on four-axis machining center, ensure that workpiece clamping deformation problem will not be caused due to the setting of opening slot in clamping process, solve the problem that the hole and groove on the outer wall of workpiece with opening slot cannot be machined with high precision due to the difficulty of clamping, simple structure, novel design, clamping is convenient and fast, ensure that the accurate and reliable machining of hole and groove on the outer wall is realized under the premise of ensuring the contour size precision of workpiece, improve machining precision and machining efficiency, machining consistency is good, reduce machining cycle and labor intensity, have higher use value.

[0004] The utility model employs the technical scheme: a kind of positioning auxiliary fixture for the positioning and clamping of workpiece with opening slot, including left positioning block and right positioning block, the left positioning block and right positioning block are respectively set in the left and right sides of workpiece, and left positioning block and right positioning block are respectively coaxially fixed on chuck shaft and tailstock of four-axis machining center, the end face of the end of left positioning block and right positioning block and workpiece is equipped with hole and groove positioning device, and the hole and groove positioning device is connected with the center hole and opening slot of workpiece corresponding end adaptation, and workpiece is fixed by right positioning block and left positioning block by adjusting the position of tailstock.

[0005] Among them, the hole and groove positioning device includes positioning circular platform and positioning boss, the end face of the end of left positioning block and right positioning block and workpiece is coaxially equipped with positioning circular platform, and the positioning circular platform is adapted to the center hole of workpiece, the outer circumferential wall of the positioning circular platform is provided with positioning boss, and the positioning boss is adapted to the slot of opening slot.

[0006] Further, the left positioning block and the positioning convex and the positioning circular table are integrated structure.

[0007] Further, the thickness A of the positioning circular table is less than the distance B between the outer hole of the through hole and the same side end surface of the workpiece.

[0008] Further, the left positioning block and the right positioning block are T-shaped column structure with one end smaller in diameter than the other end, and the large diameter end of the left positioning block and the right positioning block is provided with hole groove positioning device.

[0009] The utility model discloses a positioning device for four-axis machining center, which is characterized by the following:

[0010] 1. According to the structure characteristics of the workpiece to be machined, the left positioning block and the right positioning block provided with hole groove positioning device on the opposite end surfaces are specially designed, which provides conditions for clamping and fixing the workpiece provided with open slot on the four-axis machining center, ensures that the workpiece clamping deformation caused by the open slot will not occur during clamping, and solves the problem that the high-precision machining of the hole groove on the outer wall is difficult due to the clamping difficulty of the workpiece with open slot.

[0011] 2. The hole groove positioning device formed by the positioning circular table and the positioning convex reliably positions the two groove walls of the open slot of the workpiece under the premise that the positioning circular table is matched with the center hole of the workpiece, thereby improving the conditions for high-precision machining of the waist-shaped hole and the through hole on the outer wall of the workpiece under the premise of ensuring the outer contour size precision of the workpiece provided with open slot.

[0012] 3. The technical scheme has the advantages of simple structure, novel design, convenient and fast clamping, precise and reliable machining of the hole groove on the outer wall under the premise of ensuring the contour size precision of the workpiece, improved machining precision and machining efficiency, good machining consistency, reduced machining cycle and labor intensity, and high use value. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is a sectional view of the utility model;

[0015] Figure 3 It is a structural schematic view of the hole groove positioning device on the left positioning block and the right positioning block of the utility model;

[0016] Figure 4 It is a structural schematic view of the hole groove positioning device on the left positioning block and the right positioning block of the utility model; DETAILED DESCRIPTION

[0017] The following will be based on the embodiments of this utility model. Figures 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] It should be noted that, unless otherwise stated herein, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] Positioning auxiliary fixtures for locating and clamping workpieces with open slots, such as Figures 1-4 As shown, the structure includes a left positioning block 5 and a right positioning block 6, which are respectively located on the left and right sides of the workpiece 1. The left positioning block 5 and the right positioning block 6 are coaxially fixed on the chuck shaft and tailstock of the four-axis machining center. The left positioning block 5 and the right positioning block 6 are provided with a slot positioning device on their opposite ends of the workpiece 1. The slot positioning device is adapted to the corresponding ends of the center hole and the opening slot 2 of the workpiece 1. By adjusting the position of the tailstock, the right positioning block 6 and the left positioning block 5 can clamp and fix the workpiece 1. In the above structure, according to the structural characteristics of the workpiece 1 to be processed, the left positioning block 5 and the right positioning block 6 with slot positioning devices on their opposite ends are specially designed to provide conditions for the clamping and fixing of the workpiece 1 with the opening slot 2 on the four-axis machining center. This ensures that the workpiece 1 will not be deformed during clamping due to the opening slot 2. This solves the problem that the workpiece 1 with the opening slot 2 is difficult to clamp, which makes it impossible to process the slot on the outer wall with high precision. This reduces the processing difficulty, reduces the processing steps, and improves the processing accuracy.

[0020] The specific structure of the hole and groove positioning device is as follows: the hole and groove positioning device comprises a positioning circular platform 7 and a positioning boss 8, the left positioning block 5 and the right positioning block 6 are coaxially provided with the positioning circular platform 7 on the end face of the opposite end of the workpiece 1, and the positioning circular platform 7 is matched with the center hole of the workpiece 1, the positioning boss 8 is made on the outer circumferential wall of the positioning circular platform 7 and is matched with the slot of the open slot 2; specifically, the left positioning block 5, the positioning circular platform 7 and the positioning boss 8 thereon are of an integral structure, and the right positioning block 6, the positioning circular platform 7 and the positioning boss 8 thereon are of an integral structure; specifically, the thickness A of the positioning circular platform 7 is smaller than the distance B between the outer side hole of the through hole 4 and the same side end face of the workpiece 1, so as to avoid the interference of the positioning circular platform 7 on the through hole 4 and ensure the smooth processing of the through hole 4; in the above structure, the hole and groove positioning device formed by the positioning circular platform 7 and the positioning boss 8 reliably positions the two side slot walls of the open slot 2 of the workpiece 1 under the premise that the positioning circular platform 7 is matched with the center hole of the workpiece 1, so as to improve the conditions for high-precision processing of the waist-shaped hole 3 and the through hole 4 on the outer wall of the workpiece 1 under the premise of ensuring the outer contour size precision of the workpiece 1 provided with the open slot 2.

[0021] The left positioning block 5 and the right positioning block 6 are of the same structure and are both T-shaped column structures with the diameter of one end smaller than that of the other end, and the hole and groove positioning device is arranged on the end face of the large-diameter end of the left positioning block 5 and the right positioning block 6.

[0022] The technical scheme has the advantages of simple structure, novel design, convenient and fast clamping, precise and reliable processing of the hole and groove on the outer wall under the premise of ensuring the contour size precision of the workpiece, improved processing precision and processing efficiency, good processing consistency, reduced processing period and labor intensity, and high use value.

[0023] In this document, the terms "comprise", "contain", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0024] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0025] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A positioning aid jig for positioning and clamping of a workpiece with open slots, characterized in that: The left positioning block (5) and the right positioning block (6) are respectively arranged on the left side and the right side of the workpiece (1), and are coaxially fixed on the chuck shaft and the tailstock of the four-axis machining center, and the left positioning block (5) and the right positioning block (6) are provided with hole and groove positioning devices on the end faces of the opposite ends of the workpiece (1), and the hole and groove positioning devices are adaptively connected with the corresponding ends of the center hole and the open slot (2) of the workpiece (1), and the workpiece (1) is tightly fixed by adjusting the position of the tailstock through the right positioning block (6) and the left positioning block (5).

2. The positioning assist fixture for positioning and clamping of a workpiece with open slotted groove according to claim 1, characterized in that: The hole and groove positioning device comprises a positioning circular table (7) and a positioning boss (8), and the left positioning block (5) and the right positioning block (6) are coaxially provided with the positioning circular table (7) on the end faces of the opposite ends of the workpiece (1), and the positioning circular table (7) is adapted to the center hole of the workpiece (1), and the outer circumferential wall of the positioning circular table (7) is provided with the positioning boss (8), and the positioning boss (8) is adapted to the slot of the open slot (2).

3. The positioning aid jig for positioning and clamping of a workpiece with open slits according to claim 2, characterized in that: The left positioning block (5) and the right positioning block (6) are integrally formed with the positioning circular table (7) and the positioning boss (8) thereon.

4. The positioning aid jig for positioning and clamping of a workpiece with open slits according to claim 3, characterized in that: The thickness A of the positioning circular table (7) is smaller than the distance B between the outer hole of the through hole (4) and the end face on the same side of the workpiece (1).

5. The positioning aid jig for positioning and clamping of a workpiece with open slits according to any one of claims 1 to 4, characterized in that: The left positioning block (5) and the right positioning block (6) are of the same structure and are T-shaped column structures with the diameter of one end smaller than the diameter of the other end, and the hole and groove positioning devices are arranged on the end faces of the large-diameter ends of the left positioning block (5) and the right positioning block (6).

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