Workpiece positioning structure for numerical control machine tool

Abstract

The utility model discloses a workpiece positioning structure for a numerical control machine tool, and relates to the technical field of numerical control machine tools. The positioning device comprises a base plate, guide grooves are symmetrically formed in the upper surface of the base plate in a diagonal mode, a positioning assembly is arranged on the lower surface of the base plate, the positioning assembly comprises a screw shaft rotationally connected to the middle of the lower surface of the base plate through a bearing, and a sleeved circular gear is arranged on the peripheral side wall of the screw shaft. A forward toothed plate and a reverse toothed plate which are in meshed connection are arranged on the two sides of the circular gear, and a forward clamping plate and a reverse clamping plate are arranged on the upper surface of the base plate; through holes are formed in the side wall of the forward clamping plate and the side wall of the reverse clamping plate, and telescopic assemblies are arranged on the side wall of the forward clamping plate and the side wall of the reverse clamping plate. The positioning assembly is arranged, the operation steps during workpiece positioning are simplified, the operation amount is reduced, the telescopic assembly is arranged, irregular and regular workpieces are clamped and positioned, and practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to numerical control machine tool technical field, especially a workpiece positioning structure for numerical control machine tool. BACKGROUND

[0002] Numerical control machine tool is digital control machine tool, refers to a kind of automatic machine tool equipped with program control system;Controlling numerical control machine tool carries out workpiece processing, effectively improves the efficiency of workpiece production, and workpiece positioning structure is set on numerical control machine tool, increases the stability when workpiece processing, to facilitate the processing of workpiece.

[0003] According to the patent literature with patent announcement No. CN213105619U, a positioning structure for numerical control machine tool machining is disclosed, which includes a fixed table, a fixed column, a connecting block and a workbench. The top end of the fixed table is fixedly connected with the connecting block, and the top end of the connecting block is installed with the fixed column. The two sides of the fixed column are installed with transmission blocks. The inside of the fixed column is provided with a reserved groove, and the inside of the reserved groove is threadedly connected with a screw rod. One side of the screw rod is installed with a clamping plate, and the inside of the clamping plate is provided with a transmission groove. The bottom end of the clamping plate is installed with a limiting block, and the inside of the fixed table is provided with a limiting groove. When the clamping plate moves, the limiting block installed at the bottom end of the clamping plate can move inside the limiting groove, which plays a limiting and guiding role. The movement of the clamping plate on the device is more stable, and the phenomenon of deviation does not occur. The material is firmly fixed to prevent the material from deviating, and the clamping plate clamps the material more firmly.

[0004] The above-mentioned positioning structure for numerical control machine tool machining, the two sides of the fixed column are installed with transmission blocks, the inside of the fixed column is provided with a reserved groove, and the inside of the reserved groove is threadedly connected with a screw rod. One side of the screw rod is installed with a clamping plate, and the inside of the clamping plate is provided with a transmission groove. The other side of the screw rod is installed with a fixed block, and the outer side wall of the fixed block is fixedly connected with a rocker. The outer side wall of the rocker is sleeved with a non-slip pad, so that it will not slip when rotating and applying force. When using, place the material to be processed on the fixed table, rotate the rocker manually, drive the screw rod to move inside the reserved groove provided in the fixed column, drive the clamping plate to move and complete the fixation and positioning of the material. First, a limiting block is installed at the bottom end of the clamping plate, and a limiting groove is provided in the inside of the fixed table. When the clamping plate moves, the limiting block installed at the bottom end of the clamping plate can move inside the limiting groove, which plays a limiting and guiding role. The movement of the clamping plate on the device is more stable, and the phenomenon of deviation does not occur. The material is firmly fixed to prevent the material from deviating, and the clamping plate clamps the material more firmly. However, multiple rockers need to be rotated, which increases the amount of operation and increases the time of workpiece positioning, reducing efficiency. In addition, it is not convenient to stably clamp irregular workpieces, which reduces the stability of the positioned workpieces and reduces the practicality.

[0005] To this end, we provide a workpiece positioning structure for numerical control machine tool to solve the above problems. The utility model discloses a workpiece positioning structure for numerical control machine tool

[0006] The utility model discloses a workpiece positioning structure for numerical control machine tool, through setting up positioning subassembly, simplified operation step, reduce the work load, accelerate workpiece positioning efficiency, and set up telescopic subassembly, the positioning of regular and irregular workpiece, increased the scope of application, and then solved the technical problem that one kind numerical control machine tool processing positioning structure in background technology has proposed.

[0007] To solve the above technical problems, the utility model is realized through the following technical schemes:

[0008] The utility model discloses a workpiece positioning structure for numerical control machine tool, including the base plate, the upper surface of base plate has the guide groove that presents diagonal symmetry and sets up, the lower surface of base plate has the positioning subassembly of setting up, the positioning subassembly includes the screw shaft that rotates and connects in the lower surface middle part of base plate, the peripheral lateral wall of screw shaft has the round gear of sleeve joint, the two sides of round gear have the forward toothed plate and reverse toothed plate of meshing connection, the upper surface of base plate has the forward clamping plate and reverse clamping plate of setting up, the lower surface connection of forward clamping plate connects the connecting block and passes through guide groove with the upper surface connection of forward toothed plate, the lower surface connection of reverse clamping plate connects the connecting block and passes through guide groove with the upper surface connection of reverse toothed plate, the lateral wall of forward clamping plate and reverse clamping plate all has the through -hole of setting up, the lateral wall of forward clamping plate and reverse clamping plate all has the telescopic subassembly of setting up, the telescopic subassembly includes the screw rod of having, the screw rod's one end is firmly connected with round block, the other end screw thread connection of screw rod has the lateral wall of nut connection and has the reset spring of connection, the reset spring sleeve joint is on the peripheral lateral wall of screw rod.

[0009] The utility model further sets up, the lower surface of base plate has the support of rectangular array connection, the section of support is L character shape, the upper surface of support has the bolt of screw connection.

[0010] The utility model further sets up, the section of setting frame connected on the lower surface of base plate is U character shape, the screw shaft is rotated and is connected with setting frame through bearing.

[0011] The utility model further sets up, the lower surface of sleeve seat of sleeve joint on the peripheral lateral wall of screw shaft has the connecting rod of connection, the inner bottom of setting frame has the annular groove of setting up, the lower end setting of connecting rod is set up ball is set up in the inside of annular groove.

[0012] The utility model further sets up, the peripheral lateral wall of screw shaft has the nut of screw connection, the lower surface of nut and setting frame contact.

[0013] The utility model further sets up, two side walls of the base plate have the chute that opens symmetrically, the side wall of positive clamping plate and reverse clamping plate all have the movable rack of connection, the movable rack's inside wall connection sliding block is connected in the inside of chute.

[0014] The utility model further sets up, the section of chute is T character shape, the section of movable rack is L character shape, the section of sliding block is T character shape.

[0015] The utility model further sets up, the side wall of round block has the anti -skid groove that opens, the outer diameter size of screw bush is greater than the inner diameter size of through -hole.

[0016] The utility model has the following beneficial effects:

[0017] 1, the utility model discloses a positioning assembly is set up, rotates the screw shaft, the denticulate gear rotates, and the positive toothed plate and the reverse toothed plate move oppositely or back to each other, realize the adjustment of the spacing between the positive clamping plate and the reverse clamping plate, realize the positioning or slack of workpiece of numerical control machine tool, it is convenient to process workpiece on numerical control machine tool, and simplify the operation step, reduce the work load, accelerate the positioning efficiency of workpiece.

[0018] 2, the utility model discloses a telescopic component is set up, and the elastic performance of reset spring is convenient for the clamping positioning of irregular workpiece, and then increase the scope of application, improve practicality, and it is convenient to clamp and position the regular and irregular workpiece on numerical control machine tool. ACCURACY OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduces.

[0020] Figure 1 It is a kind of numerical control machine tool workpiece positioning structure's three-dimensional schematic Figure 1 ;

[0021] Figure 2 It is a kind of numerical control machine tool workpiece positioning structure's three-dimensional schematic Figure 2 ;

[0022] Figure 3 It is Figure 2 A structure enlarged schematic view in the middle

[0023] Figure 4 It is the connection schematic view of base plate, positive clamping plate, reverse clamping plate, positive toothed plate, reverse toothed plate and movable rack;

[0024] Figure 5 It is the exploded schematic view of base plate, setting rack, denticulate gear and screw shaft Figure 1 ;

[0025] Figure 6 Assembled view of the base plate, the mounting frame, the circular gear and the screw shaft Figure 2 .

[0026] In the drawings, the components represented by each reference numeral are listed as follows:

[0027] 1-base plate, 101-leg, 102-bolt, 103-slotted guide, 104-guide slot, 2-positioning assembly, 201-mounting frame, 201a-annular groove, 202-forward toothed plate, 203-circular gear, 203a-nut, 203b-screw shaft, 204-reverse toothed plate, 205-forward clamping plate, 206-reverse clamping plate, 206a-movable frame, 206b-connection block, 206c-sliding block, 206d-through hole, 207-sleeve, 207a-link, 207b-roller, 208-bearing, 3-telescopic assembly, 301-sleeve, 302-screw rod, 303-return spring, 304-circular block, 304a-anti-skid groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0029] Embodiment 1

[0030] Please refer to Figure 1 and Figure 2 The utility model relates to a workpiece positioning structure for numerical control machine tools, which comprises a base plate 1, a leg 101, a bolt 102, a slotted guide 103 and a guide slot 104.

[0031] Specifically, the lower surface of the base plate 1 is connected with the leg 101, the upper surface of the leg 101 is threadedly connected with the bolt 102, the upper surface of the base plate 1 is provided with the guide slot 104, and the side wall of the base plate 1 is provided with the slotted guide 103.

[0032] Further, the leg 101 is arranged in a rectangular array, the cross section of the leg 101 is in the shape of L, the two slotted guides 103 are symmetrically arranged, the cross section of the slotted guide 103 is in the shape of T, and the two guide slots 104 are diagonally and symmetrically arranged.

[0033] The operation process of the embodiment is as follows: the bolt 102 is rotated counterclockwise to lock the leg 101 on the numerical control machine tool, so that the base plate 1 is placed on the numerical control machine tool; conversely, the base plate 1 is disassembled from the numerical control machine tool.

[0034] Embodiment 2

[0035] Please refer to Figure 1 , Figure 2 ,Figure 4 、 Figure 5 and Figure 6 On the basis of the specific embodiment one, the positioning assembly 2 is provided, which comprises the installation frame 201, the forward toothed plate 202, the circular gear 203, the screw shaft 203b, the reverse toothed plate 205, the forward clamping plate 205, the reverse clamping plate 206, the sleeve seat 207 and the bearing 208, the single screw shaft 203b is rotated to adjust the distance between the forward clamping plate 205 and the reverse clamping plate 206, to realize the clamping positioning or loosening of the workpiece of the numerical control machine tool, and to simplify the operation steps, reduce the workload, and accelerate the efficiency of the workpiece clamping positioning of the numerical control machine tool;

[0036] Specifically, the installation frame 201 is connected to the lower surface of the base plate 1, and the inner bottom of the installation frame 201 is provided with an annular groove 201a, the lower surface of the base plate 1 is provided with a screw shaft 203b rotatably connected through the bearing 208, the screw shaft 203b is rotatably connected to the middle part of the installation frame 201 through the bearing 208, and the circumferential wall of the screw shaft 203b is provided with a sleeve-connected circular gear 203, the two sides of the circular gear 203 are provided with a forward toothed plate 202 and a reverse toothed plate 204 in meshing connection, the circumferential wall of the screw shaft 203b is provided with a threaded nut 203a, the threaded nut 203a is in contact with the lower surface of the installation frame 201, the forward clamping plate 205 and the reverse clamping plate 206 are arranged on the upper surface of the base plate 1, the connecting block 206b connected to the lower surface of the forward clamping plate 205 penetrates the guide groove 104 and is connected to the upper surface of the forward toothed plate 202, the connecting block 206b connected to the lower surface of the reverse clamping plate 206 penetrates the guide groove 104 and is connected to the upper surface of the reverse toothed plate 204, the side walls of the forward clamping plate 205 and the reverse clamping plate 206 are both provided with a movable frame 206a, the inner side wall of the movable frame 206a is provided with a sliding block 206c, the sliding block 206c is slidingly connected in the inner part of the sliding groove 103, the side walls of the forward clamping plate 205 and the reverse clamping plate 206 are both provided with a through hole 206d, the sleeve seat 207 is sleeved on the circumferential wall of the screw shaft 203b, and the lower surface of the sleeve seat 207 is provided with a connecting rod 207a, the lower end of the connecting rod 207a is provided with a ball 207b, and the ball 207b is movably arranged in the inner part of the annular groove 201a;

[0037] Further, the cross section of the installation frame 201 is U-shaped, the cross section of the movable frame 206a is L-shaped, the cross section of the sliding block 206c is T-shaped, the through hole 206d is rectangularly arranged, and the connecting rod 207a is annularly arranged;

[0038] The operation process of the embodiment is as follows: the nut 203a is loosened, the position locking of the screw shaft 203b is released, the screw shaft 203b is rotated, when the forward toothed plate 205 and the reverse toothed plate 206 move towards each other, the connecting block 206b moves towards each other, the two movable frames 206a move towards each other, the two sliding blocks 206c move towards each other, the forward clamping plate 205 and the reverse clamping plate 206 move towards each other, and the numerical control machine workpiece on the base plate 1 is clamped and positioned; conversely, when the forward toothed plate 205 and the reverse toothed plate 206 move away from each other, the clamping and positioning of the numerical control machine workpiece on the base plate 1 is released.

[0039] Embodiment 3

[0040] Please refer to Figure 1 , Figure 2 and Figure 3 , on the basis of embodiment one and embodiment two, the telescopic assembly 3 is provided, which comprises a screw sleeve 301, a screw rod 302, a reset spring 303, a circular block 304 and an anti-skid groove 304a, which facilitates the positioning of regular and irregular numerical control machine workpieces, increases the scope of application, and improves the practicability;

[0041] Specifically, the screw rod 302 penetrates through the through hole 206d, one end of the screw rod 302 is fixedly connected with the circular block 304, the side wall of the circular block 304 is provided with the anti-skid groove 304a, the other end of the screw rod 302 is threadedly connected with the screw sleeve 301, and the reset spring 303 is sleeved on the circumferential side wall of the screw rod 302, and one end of the reset spring 303 is connected with the inner side wall of the screw sleeve 301;

[0042] Further, the screw rod 302 is arranged in a rectangular array, the anti-skid groove 304a is arranged in a rectangular array, and the outer diameter of the screw sleeve 301 is larger than the inner diameter of the through hole 206d;

[0043] The operation process of the embodiment is as follows: when it is necessary to clamp and position the irregular numerical control machine workpiece, the circular block 304 in contact with the irregular numerical control machine workpiece is first contacted, so that the corresponding reset spring 303 is stretched, the screw rod 302 is moved, and until the plurality of circular blocks 304 are simultaneously in contact with the irregular numerical control machine workpiece, the clamping and positioning of the irregular numerical control machine workpiece is realized.

[0044] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A workpiece positioning structure for a numerical control machine tool, comprising a base plate (1), the upper surface of the base plate (1) being provided with guide grooves (104) which are symmetrically opened in diagonal directions, characterized in that: The lower surface of the substrate (1) is provided with a positioning assembly (2), which comprises a screw shaft (203b) rotatably connected to the middle of the lower surface of the substrate (1) through a bearing (208), a circular gear (203) sleeved on the peripheral side wall of the screw shaft (203b), a positive tooth plate (202) and a reverse tooth plate (204) meshingly connected on both sides of the circular gear (203), a positive clamping plate (205) and a reverse clamping plate (206) provided on the upper surface of the substrate (1), a connecting block (206b) connected to the lower surface of the positive clamping plate (205) penetrating the guide groove (104) and connected to the upper surface of the positive tooth plate (202), and a connecting block (206b) connected to the lower surface of the reverse clamping plate (206) penetrating the guide groove (104) and connected to the upper surface of the reverse tooth plate (204). The side wall of the positive clamping plate (205) and the reverse clamping plate (206) is provided with a through hole (206d), and the side wall of the positive clamping plate (205) and the reverse clamping plate (206) is provided with a telescopic assembly (3), the telescopic assembly (3) comprises a screw rod (302) penetrating the through hole (206d), one end of the screw rod (302) is fixedly connected with a circular block (304), the other end of the screw rod (302) is threadedly connected with a sleeve (301), and the side wall of the sleeve (301) is connected with a reset spring (303).

2. A workpiece positioning structure for a numerically controlled machine tool according to claim 1, characterized in that: The lower surface of the substrate (1) is provided with a rectangular array of supporting legs (101), the cross section of the supporting leg (101) is L-shaped, and the upper surface of the supporting leg (101) is provided with a threaded bolt (102).

3. A workpiece positioning structure for a numerically controlled machine tool according to claim 2, characterized in that: The cross section of the placement rack (201) connected to the lower surface of the substrate (1) is U-shaped, and the screw shaft (203b) is rotatably connected to the placement rack (201) through a bearing (208).

4. A workpiece positioning structure for a numerically controlled machine tool according to claim 3, characterized in that: The lower surface of the sleeve (207) sleeved on the peripheral side wall of the screw shaft (203b) is connected with a connecting rod (207a), the inner bottom of the placement rack (201) is provided with an annular groove (201a), and the lower end of the connecting rod (207a) is provided with a ball (207b) movably arranged in the annular groove (201a).

5. A workpiece positioning structure for a numerically controlled machine tool according to claim 4, characterized in that: The peripheral side wall of the screw shaft (203b) is provided with a threaded nut (203a), and the threaded nut (203a) is in contact with the lower surface of the placement rack (201).

6. A workpiece positioning structure for a numerically controlled machine tool according to claim 1, characterized in that: The two side walls of the substrate (1) are provided with symmetrical sliding grooves (103), the side walls of the positive clamping plate (205) and the reverse clamping plate (206) are connected with movable racks (206a), and the inner side wall of the movable rack (206a) is connected with a sliding block (206c) slidably connected in the sliding groove (103).

7. A workpiece positioning structure for a numerically controlled machine tool according to claim 6, characterized in that: The cross section of the sliding groove (103) is T-shaped, the cross section of the movable rack (206a) is L-shaped, and the cross section of the sliding block (206c) is T-shaped.

8. The workpiece positioning structure for a CNC machine tool according to claim 1, characterized in that: The side wall of the circular block (304) is provided with an anti-skid groove (304a), and the outer diameter of the screw sleeve (301) is larger than the inner diameter of the through hole (206d).

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