Workpiece clamp of numerical control milling machining center

Abstract

The utility model belongs to the field of workpiece fixtures, and particularly relates to a workpiece fixture of a numerical control milling center, which comprises a base, a bidirectional screw is mounted in the base through a bearing, a rotating wheel is fixedly connected to one end, positioned on the outer side of the base, of the bidirectional screw, and two moving blocks are connected to the outer side of a rod body of the bidirectional screw through threads. And the moving block is slidably connected to the interior of the base. A base is arranged, the base can be installed below a cutter head of a machining center, then two moving blocks which are driven by a two-way screw to move face to face or back to back are arranged on the base, a clamping base is arranged on each moving block, and in addition, an inner clamping mechanism is arranged on each clamping base, transverse movement can be generated through thread movement between the adjusting rod and the clamping base, then the ball head at the tail end of the adjusting rod pushes the clamping blocks on the side wall of the hollow cylinder outwards, and therefore the tubular workpiece can be clamped and fixed from the inner side, and the external space of the tubular workpiece is not occupied.

Description

TECHNICAL FIELD

[0001] The utility model relates to workpiece fixture field, concretely is a workpiece fixture of numerical control milling machining center. BACKGROUND

[0002] The workpiece fixture of numerical control machine tool is used for fixing and clamping workpiece to ensure the stability and precision of workpiece during processing.

[0003] Through the search, in the application publication no. CN102350649A of invention application patent, a kind of workpiece fixture of numerical control machine tool, it is related to numerical control machine tool technical field, the technical problem of improving batch processing efficiency is solved.The fixture includes adapter plate, bridge plate, multiple side bolts, multiple side pressure plates, multiple positioning screw rods, multiple positioning pressure plates, four ball lock shafts;The adapter plate has two, respectively installed on the two power heads of numerical control machine tool, the upper portion of each adapter plate is all bent towards the direction of another adapter plate.

[0004] And the existing workpiece fixture when clamping some tubular workpieces, it will occupy the space outside workpiece, affect the down tool of tool, and the adjusting assembly of fixture is prone to rust jam, affect use.Therefore, it needs to be improved. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of workpiece fixture of numerical control milling machining center, solve the problem that the existing workpiece fixture when clamping some tubular workpieces, it will occupy the space outside workpiece, affect the down tool of tool, the adjusting assembly of fixture is prone to rust jam, affect use problem is solved simultaneously.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of workpiece fixture of numerical control milling machining center, including base, the inside of the base is equipped with bidirectional screw rod by bearing, the one end of the bidirectional screw rod is fixedly connected with runner outside base, the rod body outside the bidirectional screw rod is connected with two moving blocks by screw thread, and moving block is slidably connected in the inside of base, the inside of moving block is provided with automatic lubricating mechanism, the top of each moving block is fixedly connected with clamping seat, and the inside of the clamping seat is provided with inner clamping mechanism.

[0007] Preferably, the automatic lubricating mechanism comprises a sliding sheet and an oil storage sponge, the sliding sheet and the oil storage sponge are in contact with each other, the bottom of the sliding sheet is fixedly connected with a sliding pin, the sliding pin penetrates through the moving block and is in sliding connection with the moving block, the sliding pin is in abutment with the inner surface of the base, the inner portion of the moving block is provided with a spring two, one end of the spring two is fixedly connected with the sliding sheet, the other end of the spring two is fixedly connected with the inner surface of the moving block, and the inner portion of the moving block is provided with an oil outlet hole.

[0008] Preferably, the inner side bottom of the base is fixedly connected with a convex block, and the convex block corresponds to the position of the sliding pin. Through the setting of the convex block, the sliding pin can be applied with a counterforce.

[0009] Preferably, the inner clamping mechanism comprises a hollow cylinder fixedly connected to the surface of the clamping seat, a plurality of clamping blocks are in sliding connection with the inner portion of the hollow cylinder, the inner portion of the clamping seat is in threaded connection with an adjusting rod, one end of the adjusting rod is fixedly connected with a knob, the other end of the adjusting rod is fixedly connected with a ball head, and the ball head is in abutment with the clamping block. Through the setting of the inner clamping mechanism, the tubular workpiece can be clamped and fixed from the inner side without occupying the outer space of the tubular workpiece.

[0010] Preferably, the clamping block is fixedly connected with a guide block, the inner portion of the guide block is in sliding connection with a guide rod, one end of the guide rod is fixedly connected with a limiting block, the limiting block is in contact with the guide block, and the other end of the guide rod is fixedly connected with the inner surface of the hollow cylinder. Through the setting of the guide block and the guide rod, the extension of the clamping block is guided.

[0011] Preferably, the rod body of the guide rod is externally sleeved with a spring one, one end of the spring one is fixedly connected with the guide block, and the other end of the spring one is fixedly connected with the inner surface of the hollow cylinder. Through the setting of the spring one, the elastic force can be applied to the clamping block through the guide block.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1、 the utility model discloses a base can be installed below the cutter disc of machining center, then two moving blocks that are driven by bidirectional screw rod and move towards each other or away from each other are arranged on the base, and clamping seat is arranged on each moving block, in addition, the inner clamping mechanism is arranged on the clamping seat, wherein the threaded movement between the adjusting rod and the clamping seat can produce horizontal movement, and then the ball head at the end of the adjusting rod will push each clamping block of the side wall of the hollow cylinder outward, so that the tubular workpiece can be clamped and fixed from the inner side without occupying the outer space of the tubular workpiece.

[0014] 2, the utility model discloses a automatic lubricating mechanism is arranged in the inside of the moving block, when moving block resets and continues to move away, the slide pin in automatic lubricating mechanism will be reacted by the protruding block in the inside of base, then the slide pin retracts, and the reaction force is stored in the oil sponge through the slide piece, so the lubricating oil in the oil sponge can be added to bidirectional screw through the oil outlet hole, so the smoothness when moving block and clamp seat adjust can be guaranteed, and it is not easy to jam. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure perspective drawing of the utility model;

[0016] Figure 2 It is the partial structure perspective drawing of the utility model Figure 1 ;

[0017] Figure 3 It is the front view sectional view of the utility model Figure 1 ;

[0018] Figure 4 It is the partial structure enlarged view of the utility model Figure 3 ;

[0019] Figure 5 It is the A part structure enlarged view of the utility model Figure 4 ;

[0020] Figure 6 It is the B part structure enlarged view of the utility model Figure 3 .

[0021] In the drawing: 1, base;2, bidirectional screw;3, runner;4, moving block;5, clamp seat;6, inner clamping mechanism;7, automatic lubricating mechanism;61, hollow cylinder;62, clamping block;63, adjusting rod;64, ball head;65, knob;66, guide block;67, guide rod;68, limit block;69, spring one;71, slide piece;72, oil storage sponge;73, slide pin;74, spring two;75, oil outlet hole;76, protruding block. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0023] Please refer to Figures 1-3The utility model provides a workpiece clamp of numerical control milling machining center, including base 1, the inside of base 1 is equipped with two -way screw rod 2 through bearing, and one end of two -way screw rod 2 is fixedly connected with steering wheel 3 outside base 1, and the outer side of the stem of two -way screw rod 2 is connected with two moving blocks 4 through thread, and moving block 4 is slidably connected in the inside of base 1, and the top of each moving block 4 is fixedly connected with clamping seat 5.

[0024] Please see Figure 3 、 Figure 6 The inside of moving block 4 is equipped with automatic lubricating mechanism 7, and the automatic lubricating mechanism 7 is arranged to lubricate the threaded connection between the moving block 4 and the two-way screw rod 2, the automatic lubricating mechanism 7 includes a sliding plate 71 slidably connected to the inside of the moving block 4 and an oil storage sponge 72, the sliding plate 71 and the oil storage sponge 72 are in contact with each other, the bottom of the sliding plate 71 is fixedly connected with a sliding pin 73, the sliding pin 73 penetrates through the moving block 4 and is slidably connected with the moving block 4, the sliding pin 73 is in contact with the inner surface of the base 1, the inside of the moving block 4 is provided with a spring 74, one end of the spring 74 is fixedly connected with the sliding plate 71, the other end of the spring 74 is fixedly connected with the inner surface of the moving block 4, the inside of the moving block 4 is provided with an oil outlet hole 75, the oil outlet hole 75 is located at the connection between the moving block 4 and the two-way screw rod 2. The inner side of the base 1 is fixedly connected with a protrusion 76, and the protrusion 76 corresponds to the position of the sliding pin 73. The protrusion 76 can apply a counterforce to the sliding pin 73.

[0025] Please see Figures 1-5 The clamping seat 5 is provided with an inner clamping mechanism 6, and the inner clamping mechanism 6 is arranged to clamp and fix the tubular workpiece from the inside without occupying the external space of the tubular workpiece, the inner clamping mechanism 6 includes a hollow cylinder 61 fixedly connected to the surface of the clamping seat 5, a plurality of clamping blocks 62 slidably connected inside the hollow cylinder 61, an adjusting rod 63 threadedly connected inside the clamping seat 5, a knob 65 fixedly connected to one end of the adjusting rod 63, a ball head 64 fixedly connected to the other end of the adjusting rod 63, and the ball head 64 is in contact with the clamping block 62. The clamping block 62 is fixedly connected with a guide block 66, the guide block 66 is slidably connected with a guide rod 67 inside the guide block 66, one end of the guide rod 67 is fixedly connected with a limiting block 68, the limiting block 68 is in contact with the guide block 66, and the other end of the guide rod 67 is fixedly connected to the inner surface of the hollow cylinder 61. The guide block 66 and the guide rod 67 are arranged to guide the extension and retraction of the clamping block 62.

[0026] The rod body of the guide rod 67 is provided with a spring 69, one end of the spring 69 is fixedly connected with the guide block 66, and the other end of the spring 69 is fixedly connected to the inner surface of the hollow cylinder 61. The spring 69 is arranged to apply a force to the clamping block 62 through the guide block 66.

[0027] The utility model discloses a specific implementation process as follows: in use, first, the base 1 is placed below the cutter disc of the machining center, then the tubular workpiece is placed between the two clamping seats 5, then the bidirectional screw rod 2 is rotated through the rotating wheel 3, the bidirectional screw rod 2 drives the two moving blocks 4 to move towards each other, then the moving block 4 drives the respective corresponding clamping seat 5 to move close to each other, then the tubular workpiece is clamped, and the hollow cylinder 61 is located at the inside of the tubular workpiece, then the adjusting rod 63 is rotated through the knob 65, the adjusting rod 63 moves horizontally through the threaded motion between the clamping seat 5, then the ball head 64 at the end of the adjusting rod 63 pushes the clamping block 62, so that the clamping block 62 extends out of the hollow cylinder 61, then the tubular workpiece is clamped from the inside, does not occupy the external space of the tubular workpiece, and when the moving block 4 resets and continues to move away, the slide pin 73 in the automatic lubricating mechanism 7 will be affected by the reaction of the lug 76 inside the base 1, then the slide pin 73 is retracted, and the reaction force is applied to the oil storage sponge 72 through the slide sheet 71, so that the lubricating oil in the oil storage sponge 72 can be added to the bidirectional screw rod 2 through the oil outlet hole 75, so that the smoothness of the moving block 4 and the clamping seat 5 during adjustment can be ensured, and it is not easy to jam.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A workpiece holder for a numerically controlled milling machining center comprising a base (1), characterized in that: The inside of the base (1) is provided with a bidirectional screw rod (2) through a bearing, one end of the bidirectional screw rod (2) is fixedly connected with a rotating wheel (3) outside the base (1), the outer side of the rod body of the bidirectional screw rod (2) is threadedly connected with two moving blocks (4), the moving blocks (4) are slidably connected to the inside of the base (1), the inside of each moving block (4) is provided with an automatic lubricating mechanism (7), the top of each moving block (4) is fixedly connected with a clamping seat (5), and the clamping seat (5) is provided with an inner clamping mechanism (6).

2. A workpiece holder for a numerically controlled milling machining center according to claim 1, characterized in that: The automatic lubricating mechanism (7) comprises a sliding piece (71) and an oil storage sponge (72) slidably connected to the inside of the moving block (4), the sliding piece (71) and the oil storage sponge (72) are in contact with each other, the bottom of the sliding piece (71) is fixedly connected with a sliding pin (73), the sliding pin (73) penetrates through the moving block (4) and is slidably connected with the moving block (4), the sliding pin (73) abuts against the inner surface of the base (1), the inside of the moving block (4) is provided with a spring two (74), one end of the spring two (74) is fixedly connected with the sliding piece (71), the other end of the spring two (74) is fixedly connected to the inner surface of the moving block (4), and the inside of the moving block (4) is provided with an oil outlet hole (75).

3. A workpiece holder for a numerically controlled milling machining center according to claim 2, characterized in that: The inside bottom of the base (1) is fixedly connected with a convex block (76), and the convex block (76) corresponds in position to the sliding pin (73).

4. The workpiece holder of claim 1 wherein: The inner clamping mechanism (6) comprises a hollow cylinder (61) fixedly connected to the surface of the clamping seat (5), a plurality of clamping blocks (62) slidably connected in the hollow cylinder (61), an adjusting rod (63) threadedly connected in the inside of the clamping seat (5), a knob (65) fixedly connected to one end of the adjusting rod (63), a ball head (64) fixedly connected to the other end of the adjusting rod (63), and the ball head (64) abuts against the clamping block (62).

5. A workpiece holder for a numerically controlled milling machining center according to claim 4, characterized in that: The clamping block (62) is fixedly connected with a guide block (66), the guide block (66) is slidably connected with a guide rod (67) in the inside, one end of the guide rod (67) is fixedly connected with a limiting block (68), the limiting block (68) is in contact with the guide block (66), and the other end of the guide rod (67) is fixedly connected to the inner surface of the hollow cylinder (61).

6. A workpiece holder for a numerically controlled milling machining center according to claim 5, characterized in that: The rod body of the guide rod (67) is sleeved with a spring one (69) outside, one end of the spring one (69) is fixedly connected with the guide block (66), and the other end of the spring one (69) is fixedly connected to the inner surface of the hollow cylinder (61).

Images