Multi-part machining clamp structure for CNC (computer numerical control) parts

Abstract

The utility model relates to the technical field of numerical control machining, in particular to a CNC (computer numerical control) multi-part machining fixture structure, which comprises a base, a positioning seat, a positioning sheet, a part Z-direction height reference positioning block, an XY reference positioning block, a locking screw and a top block, the positioning seat is fixedly mounted at the upper end of the base, the positioning sheet is detachably connected onto the positioning seat, and the positioning seat is accurately limited and matched with the positioning sheet; a part Z-direction height reference positioning block is fixedly connected to the positioning piece, an XY reference positioning block is fixedly connected to the upper end of the part Z-direction height reference positioning block, a plurality of positioning holes are evenly formed in the XY reference positioning block at intervals, and a part to be machined can be placed in each positioning hole. A locking screw is adjustably mounted in the XY reference positioning block on one side of each positioning hole, a top block is adjustably mounted in each positioning hole, the top blocks abut against the locking screws, and the top blocks can abut against a part by adjusting the locking screws. The structure can position a plurality of parts at the same time, the machining efficiency is improved, and the positioning precision is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of numerical control processing, in particular to a CNC parts multi-piece processing fixture structure. Background Art

[0002] When parts need to be processed by CNC equipment, the existing fixing method mostly uses vise clamping to fix the parts. When a single part is processed by CNC, using the traditional vise clamping method, each part needs to reposition the XY reference. When processing multiple parts of a single type, each part needs to position the XY reference once, which is complicated to operate and has low processing efficiency. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a CNC parts multi-piece processing fixture structure with scientific design, reasonable structure and diverse functions.

[0004] The utility model solves the technical problem by adopting the following technical solutions:

[0005] A CNC parts multi-piece processing fixture structure comprises a base, a positioning seat, a positioning piece, a part Z-direction height reference positioning block, an XY reference positioning block, a locking screw and a top block, wherein a positioning seat is fixedly mounted on the upper end of the base, a positioning piece is detachably connected to the positioning seat, and the positioning seat and the positioning piece are accurately limited and matched; a part Z-direction height reference positioning block is fixedly connected to the positioning piece, an XY reference positioning block is fixedly connected to the upper end of the part Z-direction height reference positioning block, a plurality of positioning holes are evenly spaced in the XY reference positioning block, and each positioning hole can place a part to be processed;

[0006] A locking screw is installed in the XY reference positioning block on one side of the positioning hole, and a top block is installed in the positioning hole. The top block abuts against the locking screw. The locking screw can be adjusted to make the top block abut against the part.

[0007] Moreover, a layer of part hanging platform giving way blocks is arranged between the part Z-direction height reference positioning block and the XY reference positioning block.

[0008] Moreover, the main body of the top block is an L-shaped cube structure, and a right-angle limit groove is arranged on one side of the top block, the right-angle limit groove is used to abut a vertical right-angle side of the part, and a top screw end face is arranged on the other side of the top block, and the top screw end face and the two sides of the right-angle limit groove are both arranged obliquely at an acute angle, and the top screw end face vertically abuts the locking screw.

[0009] Moreover, four limiting holes are evenly spaced laterally on the XY reference positioning block, and the limiting holes all penetrate the XY reference positioning block in the vertical direction. The limiting holes are provided with mutually adjacent X-direction inner walls and Y-direction inner walls, and the X-direction inner walls and Y-direction inner walls are used to position and support the parts to be processed;

[0010] A horizontal internal threaded hole is arranged in a side wall of the limiting hole away from the inner wall in the X direction and the inner wall in the Y direction. The internal threaded hole is used for engaging and installing a locking screw. The locking screw can pass through the internal threaded hole. One end of the locking screw is arranged outside the XY reference positioning block to facilitate rotating the locking screw for adjustment. The other end of the locking screw passes through the limiting hole and can abut against the top screw end face of the top block.

[0011] Moreover, the part hanging platform making way block is provided with making way holes which match the positioning holes one by one, and the size of the making way holes is larger than the positioning holes.

[0012] Moreover, the part Z-direction height reference positioning block is a flat plate structure with a flat top surface, and the part Z-direction height reference positioning block, the part hanging platform yielding block and the XY reference positioning block are all provided with corresponding connecting bolt holes.

[0013] Moreover, the positioning piece is a rectangular cube structure, a third center hole is arranged in the center of the positioning piece, and four locking grooves are arranged in horizontal and vertical directions on the periphery of the third center hole; the positioning seat is a disc structure, a second center hole is arranged in the center of the positioning seat, and four locking blocks are arranged on the positioning seat on the periphery of the second center hole, and the locking blocks match the locking grooves one by one.

[0014] Moreover, the main body of the base is a rectangular cube structure, with a boss arranged in the middle of the base, first bolt holes for connecting and fixing the CNC machining platform are arranged on the base on both sides of the boss, a first center hole is arranged at the center position of the boss, and eight second bolt holes are evenly spaced in a ring on the boss outside the first center hole, and the second bolt holes are used to install bolt connection positioning seats.

[0015] The advantages and positive effects of the utility model are:

[0016] This structure can position multiple parts at the same time, improve processing efficiency, and has high positioning accuracy, and is universal for processing single-piece multiple parts of different types. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the fixture structure.

[0018] Figure 2 It is a structural diagram of the top block.

[0019] Figure 3 It is a structural diagram of the XY reference positioning block.

[0020] Figure 4 It is a structural diagram of the parts hanging platform giving way block.

[0021] Figure 5It is a structural diagram of the Z-axis height reference positioning block of the part.

[0022] Figure 6 It is a schematic diagram of the structure of the positioning piece.

[0023] Figure 7 It is a structural schematic diagram of the positioning seat.

[0024] Figure 8 It is a schematic diagram of the structure of the base.

[0025] Description of the drawings: 1. Locking screw; 2. Part; 3. Top block; 31. Top screw end face; 32. Right-angle limit groove; 4. XY reference positioning block; 41. Limit hole; 42. Internal threaded hole; 5. Part hanging platform clearance block; 51. Clearance hole; 6. Part Z-axis height reference positioning block; 7. Base; 71. First center hole; 72. Second bolt hole; 73. First bolt hole; 8. Positioning seat; 81. Second center hole; 82. Locking block; 83. Third bolt hole; 9. Positioning piece; 91. Fourth bolt hole; 92. Third center hole; 93. Locking groove. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are merely descriptive and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0027] See attached Figure 1 As shown,

[0028] A CNC parts multi-piece processing fixture structure, comprising a base 7, a positioning seat 8, a positioning piece 9, a part Z-axis height reference positioning block, an XY reference positioning block 4, a locking screw 1 and a top block 3,

[0029] A positioning seat 8 is fixedly mounted on the upper end of the base 7, and a positioning piece 9 is detachably connected to the positioning seat 8, and the positioning seat 8 and the positioning piece 9 are accurately limited and matched;

[0030] The positioning piece 9 is fixedly connected with a part Z-direction height reference positioning block, and the upper end of the part Z-direction height reference positioning block is fixedly connected with an XY reference positioning block 4, and a plurality of positioning holes are evenly spaced in the XY reference positioning block 4, and the positioning holes are used for limiting and supporting the part 2 to be processed;

[0031] A locking screw 1 is installed in the XY reference positioning block 4 on one side of the positioning hole, and a top block 3 is installed in the positioning hole. The top block 3 abuts the locking screw 1. Adjusting the locking screw 1 can make the top block 3 abut the part, thereby locking the position of the part in the positioning hole.

[0032] The fixture structure of this embodiment can position four parts at a time and perform milling in CNC at the same time. If the centering time of a single part is 0.5 hours, then four parts can save 1.5 hours, and N parts can save (N-1)*0.5 hours. The processing efficiency is significantly improved.

[0033] In order to facilitate the processing of the structure of the hanging platform at the end of the part, a layer of part hanging platform giving way blocks is arranged between the part Z-direction height reference positioning block and the XY reference positioning block 4.

[0034] See attached Figure 2 As shown, the main body of the top block 3 is an L-shaped cubic structure, and a right-angle limit groove 32 is arranged on one side of the top block 3. The right-angle limit groove 32 is used to abut a vertical right-angle side of the part, and a top screw end face 31 is arranged on the other side of the top block 3. The top screw end face 31 and both sides of the right-angle limit groove 32 are arranged obliquely at an acute angle. The top screw end face 31 vertically abuts the locking screw 1, so that the two right-angle sides of the right-angle limit groove 32 simultaneously generate locking pressure on the part.

[0035] See also Figure 3 As shown, four limiting holes 41 are evenly spaced laterally on the XY reference positioning block 4, and the limiting holes 41 all penetrate the XY reference positioning block 4 in the vertical direction. The limiting holes 41 are provided with mutually adjacent X-direction inner walls and Y-direction inner walls, and the X-direction inner walls and Y-direction inner walls are used to position and support the parts to be processed;

[0036] A horizontal internal thread hole 42 is provided in a side wall of the limiting hole 41 away from the inner wall in the X direction and the inner wall in the Y direction. The internal thread hole 42 is used for engaging and installing the locking screw 1. The locking screw 1 can pass through the internal thread hole 42. One end of the locking screw 1 is arranged outside the XY reference positioning block 4 to facilitate the rotation of the locking screw 1 for adjustment. The other end of the locking screw 1 is inserted into the limiting hole 41 and can abut against the top screw end face 31 of the top block 3. The limiting groove of the top block 3 and the inner wall in the X direction and the inner wall in the Y direction of the limiting hole 41 lock the part to be processed from four sides.

[0037] See attached Figure 4 As shown, the part hanging platform's clearance block is provided with clearance holes 51 that match the positioning holes one by one, and the size of the clearance holes 51 is larger than the positioning holes.

[0038] See attached Figure 5 As shown, the part Z-axis height reference positioning block is a flat plate structure with a flat top surface. The part Z-axis height reference positioning block, the part hanging platform clearance block and the XY reference positioning block 4 are all provided with corresponding connecting bolt holes for installing bolts for fixed connection.

[0039] See attached Figure 6 , 7As shown, the positioning seat 8 and the positioning piece 9 adopt a 3R repeated positioning system structure design, which can accurately reset and match.

[0040] The positioning piece 9 is a rectangular cube structure, with a third center hole 92 arranged at the center of the positioning piece 9, four locking grooves 93 arranged horizontally and vertically intersecting on the periphery of the third center hole 92, and a fourth bolt hole 91 arranged between each of the locking grooves 93, which is used to install the Z-axis height reference positioning block of the bolted connection part.

[0041] The positioning seat 8 is a disc structure, and a second center hole 81 is provided at the center of the positioning seat 8. Four locking blocks 82 are provided on the positioning seat 8 outside the second center hole 81, and the locking blocks 82 match the locking grooves 93 one by one. Eight third bolt holes 83 are evenly spaced in an annular manner on the outer periphery of the positioning seat 8, and the third bolt holes 83 are used to install bolts to connect the base 7.

[0042] See attached Figure 8 As shown, the main body of the base 7 is a rectangular cube structure, a boss is arranged in the middle of the base 7, first bolt holes 73 for connecting and fixing the CNC processing platform are arranged on the base 7 on both sides of the boss, a first center hole 71 is arranged at the center position of the boss, and eight second bolt holes 72 are evenly spaced in an annular manner on the boss outside the first center hole 71, and the second bolt holes 72 are used for installing bolts to connect the positioning seat 8.

[0043] The first center hole 71, the second center hole 81 and the third center hole 92 are coaxially arranged, and inserting the center shaft can further ensure accurate assembly positioning.

[0044] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A CNC parts multi-piece processing fixture structure, characterized in that: The invention comprises a base (7), a positioning seat (8), a positioning piece (9), a part Z-direction height reference positioning block, an XY reference positioning block (4), a locking screw (1) and a top block (3); a positioning seat (8) is fixedly mounted on the upper end of the base (7); a positioning piece (9) is detachably connected to the positioning seat (8); the positioning seat (8) and the positioning piece (9) are accurately limited in position; a part Z-direction height reference positioning block is fixedly connected to the positioning piece (9); an XY reference positioning block (4) is fixedly connected to the upper end of the part Z-direction height reference positioning block; a plurality of positioning holes are evenly spaced in the XY reference positioning block (4); each positioning hole can hold a part to be processed; A locking screw (1) is installed in an XY reference positioning block (4) on one side of the positioning hole, and a top block (3) is installed in the positioning hole. The top block (3) abuts against the locking screw (1). The locking screw (1) can be adjusted to make the top block (3) abut against the part.

2. The CNC parts multi-piece processing fixture structure according to claim 1 is characterized in that: A layer of part hanging platform yielding blocks is arranged between the part Z-direction height reference positioning block and the XY reference positioning block (4).

3. The CNC parts multi-piece processing fixture structure according to claim 2 is characterized in that: The main body of the top block (3) is an L-shaped cubic structure. A right-angle limit groove (32) is arranged on one side of the top block (3). The right-angle limit groove (32) is used to abut a vertical right-angle side of a part. A top screw end face (31) is arranged on the other side of the top block (3). The top screw end face (31) and both sides of the right-angle limit groove (32) are arranged obliquely at an acute angle. The top screw end face (31) vertically abuts against the locking screw (1).

4. The CNC parts multi-piece processing fixture structure according to claim 2 is characterized in that: Four limiting holes (41) are evenly spaced laterally on the XY reference positioning block (4), the limiting holes (41) all penetrate the XY reference positioning block (4) in the vertical direction, and adjacent X-direction inner walls and Y-direction inner walls are provided in the limiting holes (41), and the X-direction inner walls and Y-direction inner walls are used to position and support the parts to be processed; A horizontal internal thread hole (42) is arranged in a side wall of the limiting hole (41) away from the inner wall in the X direction and the inner wall in the Y direction. The internal thread hole (42) is used for engaging and installing a locking screw (1). The locking screw (1) can pass through the internal thread hole (42). One end of the locking screw (1) is arranged outside the XY reference positioning block (4) to facilitate rotating the locking screw (1) for adjustment. The other end of the locking screw (1) passes into the limiting hole (41) and can abut against the top screw end surface (31) of the top block (3).

5. The CNC parts multi-piece processing fixture structure according to claim 2, characterized in that: The part hanging platform clearance block is provided with clearance holes (51) that match the positioning holes one by one, and the size of the clearance holes (51) is larger than the positioning holes.

6. The CNC parts multi-piece processing fixture structure according to claim 2, characterized in that: The part Z-direction height reference positioning block is a flat plate structure with a flat top surface. The part Z-direction height reference positioning block, the part hanging platform clearance block and the XY reference positioning block (4) are all provided with corresponding connecting bolt holes.

7. The CNC parts multi-piece processing fixture structure according to claim 2 is characterized in that: The positioning piece (9) is a rectangular cubic structure, a third center hole (92) is arranged at the center of the positioning piece (9), and four locking grooves (93) are arranged on the periphery of the third center hole (92) in a horizontal and vertical direction; the positioning seat (8) is a disc structure, a second center hole (81) is arranged at the center of the positioning seat (8), and four locking blocks (82) are arranged on the positioning seat (8) on the periphery of the second center hole (81), and the locking blocks (82) are matched with the locking grooves (93) one by one.

8. The CNC parts multi-piece processing fixture structure according to claim 2, characterized in that: The main body of the base (7) is a rectangular cubic structure, a boss is arranged in the middle of the base (7), first bolt holes (73) for connecting and fixing the CNC processing platform are arranged on the base (7) on both sides of the boss, a first center hole (71) is arranged at the center of the boss, and eight second bolt holes (72) are evenly spaced in an annular manner on the boss outside the first center hole (71), and the second bolt holes (72) are used to install bolts to connect the positioning seat (8).

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