CN221337656U - Machine tool fixture structure for numerical control machine tool - Google Patents

Abstract

The utility model relates to the technical field related to numerically-controlled machine tool fixtures, in particular to a machine tool fixture structure for a numerically-controlled machine tool, which comprises a base, a workbench, a guide rod, a fixture, a first threaded rod, a bidirectional threaded rod and the like; the base is provided with two parallel arrangement, the base is provided with a workbench, the workbench and the two bases are connected in a rotary mode, four mutually perpendicular and crossed sliding grooves are formed in the table top of the workbench, and the crossing part of the sliding grooves is located at the center of the table top of the workbench. According to the utility model, the first threaded rod is driven to rotate by the first motor, and the clamps on the first threaded rod and the bidirectional threaded rod can synchronously move by mutually matching bevel gears on the first threaded rod and the bidirectional threaded rod, so that the four clamps can coordinate and agree with each other when the clamping is stable, and the situation that the workpiece is worn or deformed can be reduced.

Description

Machine tool fixture structure for numerical control machine tool

Technical Field

The utility model relates to the technical field related to numerically-controlled machine tool fixtures, in particular to a machine tool fixture structure for a numerically-controlled machine tool.

Background

The machine tool fixture is a device used for clamping a workpiece and guiding a cutter on a machine tool. Refers to a fixture specially designed for a certain process of a certain workpiece. The fixture is characterized by compact structure, rapid and convenient operation, labor saving, high processing precision and production efficiency, long design and manufacturing period and high manufacturing cost, and when the product is changed, the fixture is scrapped due to no longer being used, and is only suitable for the production with fixed product and large batch, and the fixture is contacted with the positioning reference of the workpiece to determine the correct position of the workpiece in the fixture, thereby ensuring the relative correct position of the workpiece relative to the cutter and the processing movement of the machine tool during processing.

Patent publication number is CN 214869749U's patent discloses a thimble type clamping machine of numerical control lathe, including the fixed pipe, the inner wall fixedly connected with fixed column of fixed pipe, the one end fixedly connected with first splint of keeping away from the fixed pipe of fixed column, the screw hole has been seted up to the surface of fixed pipe, the inside threaded connection of screw hole has the screw thread post, the one end of screw thread post is provided with the second splint, the surface fixedly connected with of second splint pushes away the post frame, the supporting spring has been cup jointed to the surface of pushing away the post frame, one side fixedly connected with handle of pushing away the post frame.

The thimble type clamping mechanism designed by the patent above, through the setting of support frame and mounting plate, and reach with thimble type clamping mechanism and make and push away the post frame and remove, can make the device fixed more firm, and carry out continuous pressurization to the work piece with the thimble cooperation vice, make the work piece can be stabilized by the centre gripping, but when adopting the thimble to carry out the centre gripping, the contact area of thimble and work piece is too little, easily lead to the work piece to appear vibrating or wearing and tearing in the course of working, thereby influence machining precision, consequently, need improve the lathe anchor clamps for the thimble type digit control machine tool, design a lathe anchor clamps structure for digit control machine tool of difficult wearing and tearing work piece.

Disclosure of utility model

(1) Technical problem to be solved

The utility model aims to overcome the defect that the existing thimble type clamping mechanism is easy to wear or damage the structure of a workpiece while stably clamping the workpiece, and the technical problem to be solved by the utility model is to provide a machine tool clamp structure for a screw driving type numerical control machine tool.

(2) Technical proposal

In order to solve the technical problems, the utility model provides a machine tool fixture structure for a numerical control machine tool, which comprises a base, a workbench, a guide rod, fixtures, a first threaded rod, a bidirectional threaded rod, a first motor and bevel gears, wherein the base is provided with two sections which are arranged in parallel, the workbench is arranged on the base, the workbench and the two bases are connected in a rotating way, four mutually perpendicular and crossed sliding grooves are formed in the table top of the workbench, the crossing parts of the sliding grooves are positioned at the center of the table top of the workbench, the fixtures are connected in the sliding grooves in a sliding way through the guide rod, the fixtures are four in number and mutually matched, the interiors of the sliding grooves at the front side and the rear side of the workbench are respectively connected with the first threaded rod in a rotating way, the first threaded rod is provided with two sections which are respectively arranged at the front side and the rear side, the first motor is also arranged in the sliding grooves at the rear side, the first motor is connected with a first threaded rod corresponding to the rear side through a coupler, the inside of the sliding groove on the left side and the right side of the workbench rotates a bidirectional threaded rod, bevel gears are arranged at the vertical crossing parts of the bidirectional threaded rod and the first threaded rod, the bevel gears are four and circumferentially arranged and meshed with each other, the bidirectional threaded rod is in threaded connection with clamps on the left side and the right side, the first threaded rod is in threaded connection with the clamps corresponding to the front side and the rear side, the first threaded rod on the rear side is driven by the first motor, then the first threaded rod is used as a power source to drive the four mutually meshed bevel gears to synchronously rotate, then the bevel gears drive the corresponding first threaded rod and the bidirectional threaded rod to rotate, so that the first threaded rod and the bidirectional threaded rod can drive the corresponding clamps to synchronously retract, approach or spread and separate, and then the four clamps are matched to apply the same clamping force on a workpiece under the premise of protecting the workpiece, improving the clamping effect on the workpiece.

Preferably, the upper clamping part of the clamp is in an inward arc shape which is one-fourth of the upper clamping part, and when the four clamps are mutually matched and clamp the workpiece therein, the clamping parts of the four arcs limit the workpiece in the inner part from four directions, so that the clamping stability of the workpiece is improved.

Preferably, the work bench all be provided with the baffle on the spout, the baffle is equipped with four altogether and covers respectively in corresponding spout top, and anchor clamps run through on corresponding baffle, can reduce through the baffle that the piece that machine tool machining finishes produced piece falls into in the spout, lead to taking place to block up in the spout and follow-up inconvenient clearance.

Preferably, the baffle and the workbench are designed in a detachable mode, and when various parts inside the chute are required to be failed, the baffle can be quickly detached from the workbench, so that maintenance personnel can replace or maintain the baffle.

Preferably, the clamping surfaces of the clamps are provided with anti-slip pads, the surfaces of the anti-slip pads are provided with anti-slip patterns, and the stability of the workpiece after being clamped can be improved through the anti-slip pads.

Preferably, the automatic feeding device further comprises a sliding block and a second threaded rod, the working table is close to the groove symmetrically arranged at the center point, the grooves are provided with two grooves and are located between the sliding grooves and perpendicular to each other, the inside of each groove is slidably connected with the sliding block, the height of each sliding block is higher than the depth of each groove, the top of each groove is provided with a cover plate matched with the sliding block, the cover plates are slidably connected with the working table and can cover the corresponding grooves, the cover plates can move along with the sliding blocks and can be inserted into the working table to obtain the inside of the table, and the second threaded rod is rotationally connected inside each groove and is in threaded connection with the corresponding sliding block.

Preferably, the automatic feeding device further comprises worm gears, the worm gears are arranged in the two grooves, the screw rod parts of the worm gears are connected with the second threaded rod, the worm gear parts of the worm gears are provided with rotating shafts, and the rotating shafts penetrate through the bottom of the table top of the workbench.

Preferably, the clamping device further comprises an electric push rod and a pressing plate, wherein the electric push rod is arranged at the top of the sliding block, the pressing plate is fixedly connected with the top of the push rod of the electric push rod, the pressing plate faces relatively and can be matched with the clamp to limit the placed workpiece, the height of the pressing plate is flexibly adjusted through the electric push rod, and the clamping work of workpieces with different sizes can be adapted.

Preferably, the automatic machine further comprises a synchronous wheel, a synchronous belt and a second motor, wherein the second motor is installed at the bottom of the workbench, an output shaft of the second motor is connected with one of the worm gears, the bottom of the workbench is rotationally connected with the synchronous wheel, the synchronous wheel is connected with the other worm gear, the synchronous belt is wound between the output shaft of the second motor and the synchronous wheel, the synchronous belt is driven to move by the second motor, the synchronous wheel is synchronously driven to rotate by the synchronous belt, so that the two corresponding worm gears can rotate by driving the second threaded rod, and corresponding pressing plates can be mutually far away or close to each other, so that parts with different sizes can be better adapted.

Preferably, the automatic cleaning machine further comprises hydraulic cylinders, wherein the hydraulic cylinders are arranged on the two bases, the telescopic rods of the hydraulic cylinders are connected with the side edges of the workbench on the same side in a rotating mode, the hydraulic cylinders on the two sides act on the workbench together through the telescopic rods, the workbench can turn over on the base, chips falling on the workbench can slide along the inclined planes, and therefore cleaning efficiency of the chips processed on the workpiece by a user is improved.

(3) Advantageous effects

1. According to the utility model, the first threaded rod is driven to rotate by the first motor, and the clamps on the first threaded rod and the bidirectional threaded rod can synchronously move by mutually matching bevel gears on the first threaded rod and the bidirectional threaded rod, so that the four clamps can coordinate and agree with each other when the clamping is stable, and the situation that the workpiece is worn or deformed can be reduced.

2. According to the utility model, the worm gear and worm can be synchronously driven to work through the synchronous belt by the second motor, the second threaded rod is matched with the adjustment of the sliding block, the electric push rod and the pressing plate, and finally the electric push rod is used for adjusting the height of the pressing plate, so that the pressing plate can be better adapted to the clamping work of a workpiece.

3. According to the utility model, the workbench is pushed to overturn by the hydraulic cylinder, so that the angle between the workbench and the base is changed, and the chips generated after the workpiece is processed can be conveniently and intensively cleaned by subsequent manual work.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a first cross-sectional view of the present utility model.

Fig. 3 is a second cross-sectional view of the present utility model.

Fig. 4 is a schematic perspective view of the fixture, the bidirectional threaded rod, the bevel gear and other parts according to the utility model.

Fig. 5 is a schematic perspective view of the base, synchronizing wheel and hydraulic cylinder of the present utility model.

Fig. 6 is a diagram showing the connection relationship among the electric push rod, the pressing plate, the synchronous wheel, the synchronous belt and other components. The marks in the drawings are: the device comprises a base, a 2-workbench, a 3-clamp, a 4-first threaded rod, a 41-bidirectional threaded rod, a 42-first motor, a 5-bevel gear, a 6-guide rod, a 7-slider, an 8-second threaded rod, a 81-worm gear, a 9-electric push rod, a 10-pressing plate, a 11-baffle plate, a 12-synchronous wheel, a 121-synchronous belt, a 122-second motor and a 13-hydraulic cylinder.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

Examples: the utility model provides a lathe fixture structure for digit control machine tool, as shown in figure 1-figure 3, including base 1, workstation 2, guide arm 6, anchor clamps 3, first threaded rod 4, two-way threaded rod 41, first motor 42 and bevel gear 5, base 1 is equipped with two and parallel arrangement, install workstation 2 on the base 1, be rotatable coupling between workstation 2 and the two bases 1, open on the mesa of workstation 2 has four mutually perpendicular and crisscross spouts, the intersection of spout is located the mesa central point of workstation 2, all have anchor clamps 3 through guide arm 6 sliding connection in the spout, anchor clamps 3 total four and mutually support, the interior rotation of spout of front and back side of workstation 2 is connected with first threaded rod 4, first threaded rod 4 is equipped with two sections of front and back distinction, wherein still installs first motor 42 in the spout of rear side, the first motor 42 is connected with the first threaded rod 4 corresponding to the rear side through a coupler, the inside of the sliding groove on the left side and the right side of the workbench 2 rotates a bidirectional threaded rod 41, bevel gears 5 are arranged at the vertical crossing parts of the bidirectional threaded rod 41 and the first threaded rod 4, the bevel gears 5 are arranged in four and circumferential directions and meshed with each other, the bidirectional threaded rod 41 is in threaded connection with the clamps 3 on the left side and the right side, the first threaded rod 4 is in threaded connection with the clamps 3 corresponding to the front side and the rear side, the first threaded rod 4 on the rear side is driven by the first motor 42, the first threaded rod 4 is taken as a power source to drive the four meshed bevel gears 5 to synchronously rotate, the bevel gears 5 drive the corresponding first threaded rod 4 and the bidirectional threaded rod 41 to rotate, the first threaded rod 4 and the bidirectional threaded rod 41 can drive the corresponding clamps 3 to move, and synchronously retract, approach or diffuse and keep away, and the four clamps 3 are matched to apply the same clamping force to the workpiece, so that the clamping effect on the workpiece is improved on the premise of protecting the workpiece.

As shown in fig. 4, the upper clamping part of the clamp 3 is in an inward arc shape which is one-fourth of the upper clamping part, when the four clamps 3 are mutually matched and clamp the workpiece therein, the clamping parts of the four arcs limit the workpiece inside from four directions, so that the clamping stability of the workpiece is improved, anti-slip pads are arranged on the clamping surfaces of the clamps 3, anti-slip patterns are arranged on the surfaces of the anti-slip pads, and the stability of the clamped workpiece can be improved through the anti-slip pads.

As shown in fig. 1, the sliding grooves of the workbench 2 are provided with baffle plates 11, the baffle plates 11 are provided with four pieces in total and respectively cover the tops of the corresponding sliding grooves, the clamp 3 penetrates through the corresponding baffle plates 11, scraps generated by machining of workpieces by a machine tool can be reduced to fall into the sliding grooves through the baffle plates 11, the sliding grooves are blocked and are inconvenient to clean, detachable designs are adopted between the baffle plates 11 and the workbench 2, and when various components in the sliding grooves are required to fail, the baffle plates 11 can be quickly detached from the workbench 2, so that maintenance personnel can replace or maintain the workpiece.

As shown in fig. 2 and 6, the device further comprises a sliding block 7 and a second threaded rod 8, the workbench 2 is close to the groove symmetrically arranged at the center point, the two grooves are arranged and located between the sliding grooves which are perpendicular to each other, the sliding connection inside the grooves is provided with the sliding block 7, the height of the sliding block 7 is higher than the depth of the groove, the top of the groove is provided with a cover plate which is matched with the sliding block 7, the cover plate is in sliding connection with the workbench 2 and can cover the corresponding groove, the cover plate can move along with the sliding block 7 and can be inserted into the workbench 2 to obtain the interior of the workbench body, the second threaded rod 8 is further rotationally connected inside the groove, and the second threaded rod 8 is in threaded connection with the corresponding sliding block 7.

As shown in fig. 2 and 6, the clamping device further comprises worm gears 81, two worm gears 81 are mounted in the grooves, a screw rod portion of each worm gear 81 is connected with a second threaded rod 8, a rotating shaft is arranged on the worm gear portion of each worm gear 81, the rotating shaft penetrates through the bottom of a table top of the workbench 2, the clamping device further comprises an electric push rod 9 and a pressing plate 10, the electric push rod 9 is mounted at the top of the sliding block 7, the pressing plate 10 is fixedly connected to the top of the push rod of the electric push rod 9, the pressing plate 10 faces oppositely and can be matched with the clamp 3 to limit a workpiece, the height of the pressing plate 10 is flexibly adjusted through the electric push rod 9, and clamping work of workpieces with different sizes can be adapted.

As shown in fig. 6, the device further comprises a synchronizing wheel 12, a synchronous belt 121 and a second motor 122, the second motor 122 is installed at the bottom of the workbench 2, an output shaft of the second motor 122 is connected with one of the worm gears 81, the bottom of the workbench 2 is rotationally connected with the synchronizing wheel 12, the synchronizing wheel 12 is connected with the other worm gear 81, the synchronous belt 121 is wound between the output shaft of the second motor 122 and the synchronizing wheel 12, the synchronous belt 121 is driven to move by the second motor 122, the synchronous belt 121 is used for synchronously driving the synchronous wheel 12 to rotate, so that the two corresponding worm gears 81 rotate by driving the second threaded rod 8, the corresponding pressing plates 10 can be mutually far away or close to realize better adaptation to parts with different sizes.

As shown in fig. 1 and 5, the device further comprises hydraulic cylinders 13, the two bases 1 are respectively provided with a hydraulic cylinder 13, the telescopic rods of the hydraulic cylinders 13 are rotationally connected with the side edges of the workbench 2 on the same side, the hydraulic cylinders 13 on the two sides act on the workbench 2 together through the telescopic rods, so that the workbench 2 can turn over on the base 1, and chips falling on the workbench 2 can slide along the inclined plane, so that the cleaning efficiency of the chips processed on a workpiece by a user is improved.

When in use, a workpiece is firstly placed in the center position of the workbench 2, the first motor 42 is started, the output shaft of the first motor 42 can drive the first threaded rod 4 positioned at the rear side to rotate, the rotated first threaded rod 4 drives the bevel gear 5 on the first threaded rod 4 to rotate, so that the first motor 42 can drive the first threaded rod 4 and the bidirectional threaded rod 41 to rotate through the mutual meshing drive between the bevel gears 5, the corresponding clamp 3 on the first threaded rod 4 and the bidirectional threaded rod 41 is folded towards the center position of the workbench 2 until the placed workpiece is fully clamped, the first motor 42 is closed and the second motor 122 is started after the workpiece is fully clamped, the output shaft of the second motor 122 is matched with the synchronous wheel 12, the synchronous belt 121 can be driven to move, the worm gears 81 at the two parts are mutually meshed and matched properly through the driving of the synchronous belt 121, the worm gear 81 drives the corresponding second threaded rod 8 to rotate respectively, so that the rotated second threaded rod 8 can move the sliding block 7 through the threaded synchronous belt 121 and drive the corresponding electric push rod 9 and the pressing plate 10 to move, the distance between the mutually matched pressing plates 10 can be changed at the moment, the size of the workpiece actually put in is adapted, the electric push rod 9 is started to correspondingly adjust the height of the pressing plate 10, the pressing plate 10 is pressed at the top of the workpiece, the stability of the workpiece after being clamped is further improved, after the workpiece which is stably clamped is machined, produced metal scraps fall onto the workbench 2, at the moment, the corresponding sliding grooves can be blocked by the baffle 11, the scraps splashed during machining cannot enter the sliding grooves, the hydraulic cylinder 13 is started to stretch and retract through driving the telescopic rod, the telescopic rod can drive the workbench 2 to overturn on the base 1, so that fallen scraps are guided downwards in an inclined manner of the workbench 2 and intensively slide down, and the scraps can be cleaned by a user conveniently.

The foregoing examples have shown only the preferred embodiments of the utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications, improvements and substitutions can be made by those skilled in the art without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. The utility model provides a lathe fixture structure for digit control machine tool, a serial communication port, including base (1), workstation (2), guide arm (6), anchor clamps (3), first threaded rod (4), two-way threaded rod (41), first motor (42) and bevel gear (5), base (1) are equipped with two and parallel arrangement, install workstation (2) on base (1), be rotatable coupling between workstation (2) and two base (1), open four mutually perpendicular and crisscross spouts on the mesa of workstation (2), the junction of spout is located the mesa central point of workstation (2), all have anchor clamps (3) through guide arm (6) sliding connection in the spout, anchor clamps (3) all four and the looks adaptation each other, the inside all rotation of spout of workstation (2) is connected with first threaded rod (4), first threaded rod (4) are equipped with the two sections of front and back differentiation, wherein still install first motor (42) in the spout of rear side, first motor (42) pass through shaft coupling and the corresponding first threaded rod (4) of rear side and connect with the inside threaded rod (4) of a left side and two-way threaded rod (4), the inside of spout (41) are equipped with two-way threaded rod (41) and two-way engagement each other in the spout, the bidirectional threaded rod (41) is in threaded connection with the left clamp (3) and the right clamp, and the first threaded rod (4) is in threaded connection with the front clamp (3) and the rear clamp.

2. The machine tool holder structure for a numerical control machine tool according to claim 1, wherein the upper holding portion of the holder (3) is in the shape of a circular arc facing inward in equal quarter.

3. The machine tool fixture structure for the numerical control machine tool according to claim 2, wherein baffle plates (11) are arranged on the sliding grooves of the workbench (2), the baffle plates (11) are provided with four in total and respectively cover the tops of the corresponding sliding grooves, and the fixture (3) penetrates through the corresponding baffle plates (11).

4. A machine tool holder structure for a numerical control machine tool according to claim 3, characterized in that the baffle (11) and the table (2) are both detachably designed.

5. The machine tool fixture structure for the numerical control machine tool according to claim 4, wherein the clamping surfaces of the fixtures (3) are provided with anti-slip pads, and the surfaces of the anti-slip pads are provided with anti-slip patterns.

6. The machine tool fixture structure for the numerical control machine tool according to claim 5, further comprising a sliding block (7) and a second threaded rod (8), wherein the working table (2) is symmetrically provided with grooves near the center point, the grooves are provided with two parts and are positioned between the sliding grooves which are perpendicular to each other, the sliding blocks (7) are connected inside the grooves in a sliding mode, cover plates which are matched with the sliding blocks (7) are arranged at the tops of the grooves, the cover plates are connected with the working table (2) in a sliding mode and can cover the corresponding grooves, the cover plates can move along with the sliding blocks (7) and can be inserted into the working table (2) to obtain the inside of the table body, the second threaded rod (8) is connected inside the grooves in a rotating mode, and the second threaded rod (8) is connected with the corresponding sliding blocks (7) in a threaded mode.

7. The machine tool fixture structure for the numerical control machine tool according to claim 6, further comprising worm gears (81), wherein the worm gears (81) are arranged in the two grooves, the screw rod portions of the worm gears (81) are connected with the second threaded rod (8), the worm gear portions of the worm gears (81) are provided with rotating shafts, and the rotating shafts penetrate through the bottom of the table top of the workbench (2).

8. The machine tool fixture structure for the numerical control machine tool according to claim 7, further comprising an electric push rod (9) and a pressing plate (10), wherein the electric push rod (9) is installed at the top of the sliding block (7), the pressing plate (10) is fixedly connected to the top of the push rod of the electric push rod (9), and the pressing plate (10) faces oppositely and can be matched with the fixture (3) to limit a placed workpiece.

9. The machine tool fixture structure for the numerical control machine tool according to claim 8, further comprising a synchronizing wheel (12), a synchronous belt (121) and a second motor (122), wherein the second motor (122) is installed at the bottom of the workbench (2), an output shaft of the second motor (122) is connected with one of the worm gears (81), the bottom of the workbench (2) is further rotationally connected with the synchronizing wheel (12), the synchronizing wheel (12) is connected with the other worm gear (81), and the synchronous belt (121) is wound between the output shaft of the second motor (122) and the synchronizing wheel (12).

10. The machine tool fixture structure for the numerical control machine tool according to claim 9, further comprising hydraulic cylinders (13), wherein the hydraulic cylinders (13) are mounted on the two bases (1), telescopic rods of the hydraulic cylinders (13) are rotationally connected with the workbench (2), and the hydraulic cylinders (13) on two sides are connected with the workbench (2) through the telescopic rods.