A bow blank positioning fixture and bow blank machining center

Abstract

The utility model relates to a kind of bow blank positioning fixture and bow blank machining center, comprising: bottom die, rotary clamping cylinder, plane mirror and clamping block, the bottom die upper portion is formed with locating surface, the bottom die left and right sides are respectively fixed with the shell of multiple rotary clamping cylinders, the piston rod of rotary clamping cylinder is fixedly connected with clamping block, the clamping block is located locating surface upper portion, the locating surface lower portion is formed with long hole, the mirror surface of plane mirror is provided with locating straight line, the locating straight line is located long hole lower portion.The utility model uses locating pin to insert the hole of bow blank and position one end, then using the locating straight line on plane mirror and the scribe on bow blank reflected by it are aligned to position the other end, to position bow blank, accurate positioning, solve the problem of bow blank inaccurate positioning.

Description

Technical Field

[0001] This utility model relates to the field of bow blank processing, and in particular to a bow blank positioning fixture and a bow blank processing center. Background Technology

[0002] When machining bow blanks, they need to be positioned along their centerline before machining the sides. This is because the centerline is the torque point of the bow blank; positioning it here and then machining the sides optimizes the overall performance of the bow blank. However, since the left and right sides need to be machined, they cannot be used for mechanical positioning. Directly visually inspecting the blank for positioning leads to inaccurate positioning and increases the scrap rate. Utility Model Content

[0003] The present invention aims to solve the above problems by providing a bow blank positioning fixture and a bow blank machining center, which solves the problem of inaccurate bow blank positioning.

[0004] A bow blank positioning fixture includes: a bottom mold, a rotary clamping cylinder, a plane mirror, and a clamping block. A positioning surface is formed on the top of the bottom mold. The left and right sides of the bottom mold are respectively fixed to the housings of multiple rotary clamping cylinders. The piston rods of the rotary clamping cylinders are fixedly connected to the clamping block. The clamping block is located above the positioning surface. An elongated through hole is formed below the positioning surface. A positioning line is provided on the mirror surface of the plane mirror, and the positioning line is located below the elongated through hole.

[0005] Preferably, the bottom mold has a placement groove at its front end, the placement groove is open at the front, the elongated through hole is connected to the placement groove at the bottom, and the plane mirror is placed in the placement groove.

[0006] Preferably, it also includes a fixing post and a screw, the screw passing through the fixing post and threadedly connected to the bottom mold, the fixing post and the inner wall of the placement groove clamping and fixing the plane mirror.

[0007] Preferably, a centerline groove is formed in the middle of the positioning surface, and the centerline groove and the positioning line are located in the same vertical plane.

[0008] Preferably, the system further includes a mounting plate, with the left and right sides of the bottom mold respectively fixedly connected to the mounting plate, and the housing of the rotary clamping cylinder fixedly connected to the mounting plate.

[0009] Preferably, the rotating clamping cylinders on the left and right sides of the bottom mold are mirror-symmetrical.

[0010] Preferably, it further includes a positioning pin, wherein the bottom mold has a pin hole, the opening of the pin hole is located in the middle of the positioning surface, and the positioning pin is inserted into the pin hole and fits against the pin hole.

[0011] A blank machining center using the blank positioning fixture further includes a mounting table, an electric spindle, and a milling cutter. The bottom mold is fixedly connected to the mounting table, the electric spindle moves relative to the bottom mold, and the bottom of the electric spindle is fixedly and detachably connected to the milling cutter.

[0012] Preferably, the assembly further includes a frame, a first slide table, a second slide table, a longitudinal drive device, a gantry, a transverse drive device, and a vertical drive device. The mounting platform is slidably connected to the frame. The longitudinal drive device drives the mounting platform to move longitudinally relative to the frame. The frame is fixedly connected to the gantry. The first slide table is slidably connected to the gantry. The transverse drive device drives the first slide table to move transversely relative to the gantry. The second slide table is slidably connected to the first slide table. The vertical drive device drives the second slide table to move vertically relative to the first slide table. The electric spindle is fixedly connected to the second slide table.

[0013] Preferably, the mounting platform is fixedly connected to multiple bottom molds, and the multiple bottom molds are arranged in a horizontal straight line.

[0014] Preferably, it also includes a tool magazine, which is fixedly connected to the mounting platform.

[0015] This invention has the following advantages: One end is positioned by inserting a positioning pin into the hole of the blank, and the other end is positioned by aligning the positioning line on the plane mirror with the scribed line reflected on the blank. This ensures accurate positioning and solves the problem of inaccurate blank positioning. Multiple rotary clamping cylinders are symmetrically positioned on the left and right sides of the bottom mold. When the milling cutter passes by, the corresponding rotary clamping cylinder drives the clamping block to move away from above the blank, preventing the clamping block from obstructing the milling cutter and improving processing efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0017] Figure 1 : A three-dimensional structural diagram of the bow blank positioning fixture (one of the diagrams); Figure 2 : Second three-dimensional structural diagram of the bow blank positioning fixture; Figure 3 : A top view of the bow blank positioning fixture; Figure 4 :exist Figure 3 Schematic diagram of the cross-sectional structure at point AA; Figure 5 :exist Figure 4 A magnified view of the structure at point B in the middle; Figure 6 : A three-dimensional structural diagram of the bow blank machining center; Figure 7 : A three-dimensional structural diagram of the bow blank. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and examples: The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. Example 1: like Figures 1 to 5 and Figure 7 As shown, this embodiment provides a bow blank positioning fixture, including: a bottom mold 1, a rotary clamping cylinder 2, a plane mirror 3, and a clamping block 21. A positioning surface 11 is formed on the top of the bottom mold 1. The left and right sides of the bottom mold 1 are respectively fixed to the housings of multiple rotary clamping cylinders 2. The piston rods of the rotary clamping cylinders 2 are fixedly connected to the clamping block 21. The clamping block 21 is located above the positioning surface 11. An elongated through hole 13 is formed below the positioning surface 11. A positioning straight line 31 is provided on the mirror surface of the plane mirror 3, and the positioning straight line 31 is located below the elongated through hole 13. The positioning straight line 31 can be a groove, a drawn straight line, or an applied tape.

[0021] Preferably, the bottom mold 1 has a placement groove 12 formed at its front end, the placement groove 12 is open at its front side, the elongated through hole 13 is connected to the placement groove 12 at its lower end, and the plane mirror 3 is placed in the placement groove 12.

[0022] Preferably, it also includes a fixing post 14 and a screw 16. The screw 16 passes through the fixing post 14 and is threaded to the bottom mold 1, thereby fixing the fixing post 14 and the bottom mold 1. The fixing post 14 and the inner wall of the placement groove 12 clamp and fix the plane mirror 3.

[0023] Preferably, a centerline groove 111 is formed in the middle of the positioning surface 11, and the centerline groove 111 and the positioning line 31 are located in the same vertical plane. When placing the bow blank 10, the line drawn at the centerline of the bow blank 10 is first aligned with the centerline groove 111, which serves to roughly position the bow blank 10, making it easier for the subsequent pin hole 18 to be smoothly inserted into the hole 100.

[0024] Preferably, the system further includes a mounting plate 15, with the left and right sides of the bottom mold 1 respectively fixedly connected to the mounting plate 15, and the housing of the rotary clamping cylinder 2 fixedly connected to the mounting plate 15.

[0025] Preferably, the rotating clamping cylinders 2 on the left and right sides of the bottom mold 1 are mirror-symmetrical.

[0026] Preferably, it also includes a positioning pin 17, the bottom mold 1 has a pin hole 18, the opening of the pin hole 18 is located in the middle of the positioning surface 11, and the positioning pin 17 is inserted into the pin hole 18 and fits against the pin hole 18.

[0027] When the bow blank 10 is not fixed, the clamping block 21 is not located above the positioning surface 11.

[0028] The bow blank 10 is machined with holes 100, and a line is drawn on the center line of the side of the bow blank 10 near the positioning surface 11.

[0029] During fixing, the bow blank 10 is placed on the positioning surface 11 of the bottom mold 1, and the positioning pin 17 is inserted into the hole 100 of the bow blank 10 to position the upper end of the bow blank 10. The operator stands in front of the opening of the placement groove 12, observes the line drawn on the bow blank 10 reflected by the plane mirror 3, and rotates and adjusts the bow blank 10 until the line drawn on the bow blank 10 reflected by the plane mirror 3 coincides with the positioning line 31. At this time, the bow blank 10 and the bottom mold 1 are positioned. The piston rod of the rotating clamping cylinder 2 rotates, causing the clamping block 21 to rotate above the bow blank 10 and move downward to press and fix the bow blank 10 on the positioning surface 11.

[0030] When the milling cutter 81 is machining the bow blank 10, if the clamping block 21 obstructs the machining position, the rotary clamping cylinder 2 drives the clamping block 21 that is obstructing the machining position to rotate away from above the positioning surface 11, so that the milling cutter 81 can perform milling on the machining position. After the machining of this position is completed, the rotary clamping cylinder 2 drives the clamping block 21 to re-clamp the bow blank 10. Since there are multiple rotary clamping cylinders 2 on both sides of the bottom mold 1, the fact that the clamping block 21 of one of the rotary clamping cylinders 2 on one side does not press the bow blank 10 does not affect the fixation of the bow blank 10 relative to the positioning surface 11.

[0031] Example 2: like Figures 1 to 7 As shown, this embodiment provides a bow blank machining center using the bow blank positioning fixture described in Embodiment 1, which also includes a mounting table 4, an electric spindle 8, and a milling cutter 81. The bottom mold 1 is fixedly connected to the mounting table 4 below, the electric spindle 8 moves relative to the bottom mold 1, and the electric spindle 8 is fixedly and detachably connected to the milling cutter 81 below.

[0032] Preferably, the assembly further includes a frame 5, a first slide 6, a second slide 7, a longitudinal drive device 41, a gantry 51, a transverse drive device 61, and a vertical drive device 71. The mounting platform 4 is slidably connected to the frame 5. The longitudinal drive device 41 drives the mounting platform 4 to move longitudinally relative to the frame 5. The frame 5 is fixedly connected to the gantry 51. The first slide 6 is slidably connected to the gantry 51. The transverse drive device 61 drives the first slide 6 to move transversely relative to the gantry 51. The second slide 7 is slidably connected to the first slide 6. The vertical drive device 71 drives the second slide 7 to move vertically relative to the first slide 6. The electric spindle 8 is fixedly connected to the second slide 7.

[0033] Preferably, the mounting platform 4 is fixedly connected to multiple bottom molds 1, which are arranged in a horizontal straight line. While the blank 10 on one bottom mold 1 is being processed, other bottom molds 1 can be fed or unloaded.

[0034] Preferably, it also includes a tool magazine 9, which is fixedly connected to the mounting platform 4.

[0035] During operation, the longitudinal drive device 41, the transverse drive device 61, and the vertical drive device 71 drive the electric spindle 8 to translate in three degrees of freedom, and the electric spindle 8 drives the end mill 81 to rotate. The electric spindle 8 can change the end mill 81 at the tool magazine 9.

[0036] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A bow blank positioning fixture, characterized in that, include: The bottom mold (1), the rotary clamping cylinder (2), the plane mirror (3) and the clamping block (21) are provided. A positioning surface (11) is formed on the top of the bottom mold (1). The left and right sides of the bottom mold (1) are fixed to the housings of multiple rotary clamping cylinders (2). The piston rod of the rotary clamping cylinder (2) is fixedly connected to the clamping block (21). The clamping block (21) is located above the positioning surface (11). A long through hole (13) is formed below the positioning surface (11). The mirror surface of the plane mirror (3) is provided with a positioning line (31). The positioning line (31) is located below the long through hole (13).

2. The bow blank positioning fixture according to claim 1, characterized in that: The bottom mold (1) has a placement groove (12) at its front end. The placement groove (12) is open at the front. The elongated through hole (13) is connected to the placement groove (12) at the bottom. The plane mirror (3) is placed in the placement groove (12).

3. The bow blank positioning fixture according to claim 2, characterized in that: It also includes a fixing post (14) and a screw (16), the screw (16) passing through the fixing post (14) and being threaded to the bottom mold (1), the fixing post (14) and the inner wall of the placement groove (12) clamping and fixing the plane mirror (3).

4. The bow blank positioning fixture according to claim 1, characterized in that: A centerline groove (111) is formed in the middle of the positioning surface (11), and the centerline groove (111) and the positioning line (31) are located in the same vertical plane.

5. A bow blank positioning fixture according to claim 1, characterized in that: It also includes a mounting plate (15), the left and right sides of the bottom mold (1) are fixedly connected to the mounting plate (15) respectively, and the housing of the rotary clamping cylinder (2) is fixedly connected to the mounting plate (15).

6. A bow blank positioning fixture according to claim 1, characterized in that: The rotating clamping cylinders (2) on the left and right sides of the bottom mold (1) are mirror-symmetrical.

7. A bow blank positioning fixture according to claim 1, characterized in that: It also includes a positioning pin (17), the bottom mold (1) has a pin hole (18), the opening of the pin hole (18) is located in the middle of the positioning surface (11), and the positioning pin (17) is inserted into the pin hole (18) and fits against the pin hole (18).

8. A bow blank machining center using the bow blank positioning fixture as described in any one of claims 1 to 7, characterized in that: It also includes a mounting table (4), an electric spindle (8) and a milling cutter (81). The bottom mold (1) is fixedly connected to the mounting table (4) below. The electric spindle (8) moves relative to the bottom mold (1). The bottom of the electric spindle (8) is fixedly and detachably connected to the milling cutter (81).

9. A bow blank machining center according to claim 8, characterized in that: It also includes a frame (5), a first slide (6), a second slide (7), a longitudinal drive device (41), a gantry (51), a transverse drive device (61), and a vertical drive device (71). The mounting platform (4) is slidably connected to the frame (5). The longitudinal drive device (41) drives the mounting platform (4) to move longitudinally and linearly relative to the frame (5). The frame (5) is fixedly connected to the gantry (51). The first slide (6) is slidably connected to the gantry (51). The transverse drive device (61) drives the first slide (6) to move transversely and linearly relative to the gantry (51). The second slide (7) is slidably connected to the first slide (6). The vertical drive device (71) drives the second slide (7) to move vertically and linearly relative to the first slide (6). The electric spindle (8) is fixedly connected to the second slide (7).

10. A bow blank machining center according to claim 8, characterized in that: The mounting platform (4) is fixedly connected to multiple bottom molds (1), and the multiple bottom molds (1) are arranged in a horizontal straight line; It also includes a tool magazine (9), which is fixedly connected to the mounting platform (4).

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