A machine tool processing tool

Abstract

The present invention discloses a machine tool processing fixture, comprising a base plate, on which a first fixed positioning member for positioning a workpiece in the positive direction of X, a second fixed positioning member for positioning the workpiece in the positive direction of Y, a movable top pressing member for positioning the workpiece in the negative direction of Y, and a supporting member and two or more pressing members for positioning the workpiece in the Z direction are provided. The machine tool processing fixture of the present invention is easy to clamp, has accurate and stable positioning, can process multiple surfaces of a workpiece in one clamping, and greatly improves processing efficiency and processing accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a machine tool processing tool. Background Art

[0002] In the field of mechanical processing technology, universal fixtures are usually used. Many workpieces have multiple processing surfaces. After processing one surface, the workpiece needs to be removed and re-clamped and positioned before the next surface can be processed. Therefore, the processing of a workpiece usually requires multiple clamping, the operation process is cumbersome, and the multiple positioning errors are large, which affects work efficiency and processing quality. Summary of the invention

[0003] The present invention aims at the above problems and designs a machine tool processing tool. The technical means adopted by the present invention are as follows:

[0004] A machine tool processing fixture comprises a base plate, on which a first fixed positioning member for positioning a workpiece in a positive X direction, a second fixed positioning member for positioning the workpiece in a positive Y direction, a movable top pressure member for positioning the workpiece in a negative Y direction, a support member for positioning the workpiece in a Z direction, and two or more clamping members are provided.

[0005] Furthermore, the first fixed positioning member includes a first fixed seat fixed on the base plate and a first supporting nail arranged on the first fixed seat, the second fixed positioning member includes a second fixed seat fixed on the base plate and a second supporting nail arranged on the second fixed seat, the nail caps of the first supporting nail and the second supporting nail are used to abut and fix the workpiece, and the movable pressing member includes a third fixed seat and an adjustable screw arranged on the third fixed seat, and the adjustable screw can be threadedly adjusted so that its nail cap can press against the workpiece.

[0006] Furthermore, the clamping member includes a first limiting column, a supporting column and a pressure plate, the pressure plate is provided with a first strip through hole, the first limiting column passes through the first strip through hole, the first limiting column is provided with a clamping nut which cooperates with the thread of the first limiting column, the clamping nut can move along the first limiting column through the thread and thus clamp the pressure plate, in the clamped state, one end of the pressure plate is pressed on the supporting column, and the other end of the pressure plate is pressed on the workpiece.

[0007] Furthermore, the bottom plate is provided with a first cushion block and a second cushion block for supporting the workpiece.

[0008] Furthermore, the first cushion block and the second cushion block are two cushion blocks of equal height arranged in parallel, and at least one of the first cushion block and the second cushion block is a strip-shaped cushion block.

[0009] Furthermore, at least one adjustable support member is provided on the bottom plate, and the adjustable support member includes a support seat and an adjustable support column whose height can be adjusted on the support seat.

[0010] Furthermore, the adjustable support column and the support seat are engaged with each other through threads.

[0011] Furthermore, the bottom plate is also provided with a third fixed positioning member for performing X-negative positioning on the workpiece, and the third fixed positioning member is detachably fixed to the bottom plate.

[0012] Furthermore, the third fixed positioning member includes a second limiting column and a positioning pressure member, the second limiting column is arranged on the edge end face of the base plate, the second limiting column is provided with a radial protrusion for pressing the positioning pressure member, the positioning pressure member is provided with a second strip through hole, the second limiting column passes through the second strip through hole and the positioning pressure member is located between the base plate and the radial protrusion, so that one end of the positioning pressure member abuts against the edge end face of the base plate, and the other end is pressed against the workpiece.

[0013] Furthermore, a first fixed positioning member, a movable pressing member and a second fixed positioning member are provided on the bottom plate, the movable pressing member and the second fixed positioning member are positioned correspondingly, and the more than two pressing members are symmetrically arranged with respect to the workpiece.

[0014] Compared with the prior art, the machine tool processing fixture described in the present invention is easy to clamp, has accurate and stable positioning, and can process multiple surfaces of a workpiece in one clamping, greatly improving processing efficiency and processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention.

[0016] Figure 2 yes Figure 1 Main view.

[0017] Figure 3 yes Figure 2 Left view of .

[0018] Figure 4 yes Figure 2 Top view of the .

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the embodiment of the present invention in a clamping state.

[0020] Figure 6 yes Figure 5 main view.

[0021] Figure 7 yes Figure 6 Left view of .

[0022] Figure 8 yes Figure 6 Top view of the .

[0023] Fig. 9 It is a schematic diagram of the three-dimensional structure of another embodiment of the present invention in a clamping state.

[0024] Fig.10 yes Fig. 9 main view.

[0025] Fig.11 yes Fig.10 Left view of .

[0026] Fig.12 yes Fig.10 Top view of the . DETAILED DESCRIPTION

[0027] like Figures 1 to 12 As shown, a machine tool processing fixture includes a base plate 1, on which a first fixed positioning member 2 for positioning a workpiece 10 in the positive direction of X, a second fixed positioning member 3 for positioning the workpiece 10 in the positive direction of Y, a movable top pressing member 4 for positioning the workpiece 10 in the negative direction of Y, a supporting member 5 for positioning the workpiece in the Z direction, and two or more pressing members 6 are provided. The X direction, Y direction, and Z direction described in the present invention are only limitations on the relative directions between the components of the present invention, and are not limitations on the absolute directions of the components.

[0028] The first fixed positioning member 2 includes a first fixed seat 21 fixed on the bottom plate 1 and a first supporting nail 22 arranged on the first fixed seat 21. The second fixed positioning member 3 includes a second fixed seat 31 fixed on the bottom plate 1 and a second supporting nail 32 arranged on the second fixed seat 31. The nail caps of the first supporting nail 22 and the second supporting nail 32 are used to abut and fix the workpiece. In this embodiment, the first fixed seat 21 includes a right-angle plate-shaped base 211 and a rib plate 212 arranged on the right-angle plate-shaped base. The transverse plate of the right-angle plate-shaped base 211 is fixed on the bottom plate 1, and the longitudinal plate faces the direction of the workpiece. The transverse plate and the workpiece are located on both sides of the longitudinal plate, so that the transverse plate will not interfere with the clamping space of the workpiece. Two first supporting nails 22 are arranged on the top of the longitudinal plate. The first supporting nails 22 are rivets. The nail caps of the rivets serve as positioning support points for positioning the workpiece. While ensuring rigidity, the contact area is reduced and the limit accuracy is increased. Specifically, the right-angle plate-shaped base 211 can be an integrated angle steel structure. Of course, the entire first fixed seat 21 can also be in other forms, as long as the workpiece can be stably positioned, preferably without causing additional interference to the workpiece placement space. In this embodiment, the structure of the second fixed positioning member 3 is the same as the first fixed positioning member 2. In this embodiment, a first fixed positioning member 2, a movable top pressing member 4 and a second fixed positioning member 3 are provided on the bottom plate 1, and the positions of the movable top pressing member 4 and the second fixed positioning member 3 correspond to each other.

[0029] The movable pressing member 4 includes a third fixing seat 41 and an adjustable screw 42 disposed on the third fixing seat 41. The adjustable screw 42 can be adjusted by threading so that its nail cap presses against the workpiece. In this embodiment, the third fixing seat 41 has the same structure as the first fixing seat 21 and the second fixing seat 31. The adjustable screw 42 is a modified bolt. In order to facilitate twisting, the end away from the nail cap can be set to a polygonal shape.

[0030] The clamping member 6 includes a first limiting column 61, a supporting column 62 and a pressing plate 63. The pressing plate 63 is provided with a first strip-shaped through hole 631. The first limiting column 61 passes through the first strip-shaped through hole 631. The first limiting column 61 is provided with a clamping nut 64 threadedly matched with the first limiting column 61. The clamping nut 64 can move along the first limiting column 61 through the thread to clamp the pressing plate 63. In the clamping state, one end of the pressing plate 63 is pressed on the supporting column 62, and the other end of the pressing plate 63 is pressed on the workpiece. In this embodiment, a total of six clamping members 6 are provided, and the clamping positions of the clamping members 6 are all non-processing areas of the workpiece to avoid interference with the processing process of the workpiece.

[0031] The bottom plate 1 is provided with two support members 5, which are a first pad 51 and a second pad 52 for supporting the workpiece. In this embodiment, the first pad 51 and the second pad 52 are two pads of equal height arranged in parallel. At least one of the first pad 51 and the second pad 52 is a strip pad, which makes the support more stable. In this embodiment, the heights of the two ends of the first pad 51 are higher than the height of the middle part, forming two support surfaces, and forming three support surfaces distributed in a triangle with the second pad 52 to firmly support the workpiece. The number, structure and position of the support members 5 are set according to the specific conditions of different workpieces. In order to position the workpiece more stably, it is preferred to set a clamping member 6 on both sides of the first pad 51 and the second pad 52. In this embodiment, two of the four clamping members are set on the side of the first pad 51 away from the second pad 52, and two are set near the upper position of the second pad 52. All clamping members 6 are preferably set symmetrically about the workpiece to ensure the balance of the clamping. The surface of the workpiece supported by the support member 5 can be a pre-processed reference surface.

[0032] At least one adjustable support member 7 is also provided on the bottom plate 1, and the adjustable support member 7 includes a support seat 71 and an adjustable support column 72 whose height can be adjusted on the support seat 71. Specifically, the adjustable support column 72 can be threadedly matched with the support seat 71, and both sides of the support column 72 are provided with support planes that can be supported by tools, and the height of the support column 72 can be adjusted by tools such as wrenches. Other adjustable structures can also be set between the support seat 71 and the support column 72. The setting of the adjustable support member 7 makes the support structure of the entire tooling more versatile, making up for the problem of fixing the support surfaces of the first cushion block 51 and the second cushion block 52. The support point of the adjustable support member 7 can be in the same plane as the support surfaces of the first cushion block 51 and the second cushion block 52, or in different planes. According to the support requirements of different workpieces, the adjustable support member 7 can be set at different positions, and the number of settings can also be selected according to specific needs, and the support height can be adjusted according to the shape of the workpiece at different positions, further enhancing the stability of positioning.

[0033] The base plate 1 is also provided with a third fixed positioning member 8 for performing negative X positioning of the workpiece. Preferably, the third fixed positioning member 8 is detachably fixed to the base plate 1. In this embodiment, the third fixed positioning member 8 includes a second limiting column 81 and a positioning pressing member 82. The second limiting column 81 is detachably fixed to the edge end face of the base plate 1, that is, the edge end face away from one end of the first fixed positioning member 2. The second limiting column 81 is provided with a radial protrusion for pressing the positioning pressing member 82. In this embodiment, the second limiting column 81 and the radial protrusion are an integral threaded pin, which is fixed in a threaded hole on the base plate 1 by threading. The radial protrusion is a pin cap 83. The positioning pressing member 82 is provided with a second strip through hole 821. The second limiting column 81 passes through the second strip through hole 821 and the positioning pressing member 82 is located between the base plate 1 and the pin cap 83, so that one end of the positioning pressing member 82 abuts against the edge end face of the base plate 1, and the other end is pressed against the workpiece. The positioning pressing piece 82 includes a pressing piece body 822 and supporting feet 823 arranged at both ends of the pressing piece body 822. The second strip-shaped through hole 821 is arranged on the pressing piece body 822. The positioning pressing piece 82 in this embodiment is an arched structure. The setting of the arched structure avoids the additional setting of supporting columns on the end face of the bottom plate 1. The end of the arched structure serves as the supporting foot 823 and also has the function of the supporting column, and tries to avoid introducing too many structures on the end face of the bottom plate 1. At the same time, the other end of the arched structure presses the workpiece, so that the edge of the workpiece can be pressed and positioned when it is on the inner side of the edge of the bottom plate 1 or flush with the edge of the bottom plate 1, without extending out of the edge of the bottom plate 1, so as to realize the positioning of the workpiece inside the tooling. Figures 5 to 8 The third fixed positioning member 8 is detachably fixed to the bottom plate 1. When processing the surface of the workpiece corresponding to the first fixed positioning member 8, the third fixed positioning member can be removed. Figures 9 to 12As shown, in order to avoid unnecessary interference, when processing other surfaces of the workpiece, a third fixed positioning member 8 can be installed to ensure that the six degrees of freedom of the workpiece are firmly positioned.

[0034] The following further describes this embodiment by taking a tooling for processing a saddle as a workpiece, especially a tooling for processing the front side of the saddle. Figures 5 to 8 As shown, during processing, first position the base plate on the machine tool workbench, use the positioning key to cooperate with the T-slot on the workbench to position and lock, the reverse side of the saddle is placed on the support member 5, the step structure of the first cushion block 51 corresponds to the concave part of the bottom surface of the saddle, which is convenient for positioning, the four clamping members 6 are all pressed on the non-processing position of the saddle, and the two clamping members 6 near the end are pressed on the lower layer of the double-layer structure of the end surface of the slide, further reducing interference, the first fixed positioning member 2 and the second fixed positioning member 3 respectively position the end surface and side surface of the slide. The positioned end surface and side surface are perpendicular to each other, and the side surface of the slide saddle can be a pre-processed reference surface. The adjustable support member 7 provides adjustable support for the part close to the end head, and together with the first cushion block 51 and the second cushion block 52, provides stable support for the slide saddle. The third fixed positioning member 8 positions the end surface on the end side of the slide saddle. Figures 9 to 12 The figure shows a situation where the third fixed positioning member is not provided. This embodiment can ensure the stable positioning of the saddle while avoiding additional interference with the end face of the end head side of the saddle and the shaft hole during machining.

[0035] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A machine tool processing tool, comprising a base plate, characterized in that: The bottom plate is provided with a first fixed positioning member for positioning the workpiece in the X direction, a second fixed positioning member for positioning the workpiece in the Y direction, a movable top pressing member for positioning the workpiece in the Y direction, a supporting member for positioning the workpiece in the Z direction, and two or more pressing members; The bottom plate is also provided with a third fixed positioning member for performing X-negative positioning of the workpiece, and the third fixed positioning member is detachably fixed to the bottom plate; The third fixed positioning member includes a second limiting column and a positioning pressing member, the second limiting column is arranged on the edge end surface of the bottom plate, the second limiting column is provided with a radial protrusion for pressing the positioning pressing member, the positioning pressing member is an arched structure, a second strip through hole is provided on the positioning pressing member, the second limiting column passes through the second strip through hole and the positioning pressing member is located between the bottom plate and the radial protrusion, so that one end of the positioning pressing member abuts against the edge end surface of the bottom plate, and the other end is pressed against the workpiece; The first fixing and positioning member comprises a first fixing seat fixed on the bottom plate and a first supporting nail arranged on the first fixing seat, the second fixing and positioning member comprises a second fixing seat fixed on the bottom plate and a second supporting nail arranged on the second fixing seat, the nail caps of the first supporting nail and the second supporting nail are used to abut and fix the workpiece, the movable pressing member comprises a third fixing seat and an adjustable screw arranged on the third fixing seat, the adjustable screw can be adjusted by thread so that its nail cap presses against the workpiece tightly; The clamping member includes a first limiting column, a supporting column and a pressing plate, the pressing plate is provided with a first strip-shaped through hole, the first limiting column passes through the first strip-shaped through hole, the first limiting column is provided with a clamping nut which is threadedly matched with the first limiting column, the clamping nut can be moved along the first limiting column through the thread to clamp the pressing plate, and in the clamping state, one end of the pressing plate is pressed on the supporting column, and the other end of the pressing plate is pressed on the workpiece; The bottom plate is provided with a first cushion block and a second cushion block for supporting the workpiece; The first cushion block and the second cushion block are two cushion blocks of equal height arranged in parallel, and at least one of the first cushion block and the second cushion block is a strip-shaped cushion block; The bottom plate is also provided with at least one adjustable support member, and the adjustable support member includes a support seat and an adjustable support column capable of adjusting the height on the support seat; The adjustable support column and the support seat are matched by threads; A first fixed positioning member, a movable pressing member and a second fixed positioning member are provided on the bottom plate. The positions of the movable pressing member and the second fixed positioning member correspond to each other. The two or more pressing members are symmetrically arranged with respect to the workpiece.

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