A multi-station fixture for CNC machine tools

Abstract

The present invention relates to the technical field of numerical control machine tools, and specifically to a multi-station fixture for numerical control machine tools, which mainly includes a mounting seat, a fixing mechanism, the fixing mechanism being arranged above the mounting seat, the fixing mechanism including a clamping block 1 fixedly mounted on the top surface of the mounting seat, and a pressing mechanism, the pressing mechanism being arranged above the clamping block 1. When the outer wall of the workpiece is clamped and fixed by the clamping block 1 and the clamping block 2, the outer wall of the workpiece pushes the wedge block to move, and when the wedge block moves, it pushes the concave frame to move downward, and the concave frame drives the connecting rod and the arc plate to move downward, and the arc plate drives the sliding rod and the pressing plate to contact the top edge of the workpiece, and at the same time, the elastic force generated by the extrusion of the elastic member 2 causes the pressing plate to press and fix the top edge of the workpiece, so that during the workpiece processing, the workpiece is not easily offset or slipped from the upper side due to the influence of external force or its own weight, thereby ensuring the positioning accuracy of the workpiece and the processing quality of the final product.

Description

Technical Field

[0001] The invention relates to the technical field of numerically controlled machine tools, in particular to a multi-station fixture for numerically controlled machine tools. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool. It is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions and decode them to enable the machine tool to move and process parts. Before conveying the machine tool to the processing process, the processed parts need to be clamped and fixed to ensure that the parts are not easily offset or moved during processing.

[0003] The Chinese patent publication number CN221696099U discloses a fixture that is convenient for multi-station processing of CNC machine tools. The device clamps the workpiece to be processed through a plurality of clamping mechanisms distributed in a ring. Multiple workpieces can be processed at one time to improve processing efficiency. The second clamping seat of the multiple clamping mechanisms can be driven to approach or move away from the first clamping seat by rotating the worm, so that the workpiece to be processed can be clamped or released, and the clamping is stable.

[0004] However, in the process of clamping and processing the workpiece, since the outer wall of the workpiece is fixed only by the first clamping seat and the second clamping seat, this design is not stable enough when processing smooth and large workpieces. In actual operation, such workpieces may be offset or slide from the upper side due to external force or their own weight, which will not only reduce the positioning accuracy of the workpiece, but also directly affect the processing quality of the final product. Summary of the invention

[0005] The object of the present invention is to provide a multi-station fixture for a CNC machine tool to solve the problems raised by the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A multi-station fixture for a numerically controlled machine tool comprises: a mounting seat, a fixing ear fixedly mounted on the outer wall of the mounting seat, a support rod fixedly mounted on the bottom surface of the fixing ear, and a mounting plate fixedly mounted on the lower end of the support rod;

[0008] A fixing mechanism is arranged above the mounting seat, and the fixing mechanism comprises a clamping block 1 fixedly mounted on the top surface of the mounting seat, a clamping block 2 is arranged on one side of the clamping block 1, and the fixing mechanism is used to clamp and fix the workpiece;

[0009] A pressing mechanism is arranged above the clamping block 1, and the pressing mechanism includes a pressing plate located above the clamping block 1, and an arc plate is arranged above the pressing plate. The pressing mechanism is used to press and fix the edge of the top surface of the workpiece, and grooves are respectively opened inside the multiple clamping blocks 1 and the multiple clamping blocks 2, and concave frames are respectively slidably installed on the inner walls of the multiple grooves, and a pair of connecting rods are respectively fixedly installed on the top surfaces of the multiple concave frames, and the upper ends of the multiple pairs of connecting rods are respectively fixedly connected to the bottom surfaces of the arc plates, and a pair of sliding rods are respectively slidably installed on the top surfaces of the multiple arc plates, and the lower ends of the multiple pairs of sliding rods are respectively fixedly connected to the top surface of the pressing plate.

[0010] Preferably, two mounting holes are installed through the top surface of the mounting plate, three support bars are fixedly installed on the bottom surface of the mounting seat, a circular plate is fixedly installed on the other end of the three support bars, a motor is fixedly installed on the bottom surface of the circular plate, a rotating shaft is fixedly installed on the output end of the motor, and the upper end of the rotating shaft rotates through the first bearing seat, penetrates the bottom surface of the circular plate and extends to above the circular plate.

[0011] Preferably, a rotating plate is fixedly mounted on the upper end of the rotating shaft, an arc groove is formed through the top surface of the rotating plate, multiple clamping blocks 1 and 2 are provided, and movable blocks are fixedly mounted on the bottom surfaces of the multiple clamping blocks 2.

[0012] Preferably, a plurality of cross grooves are formed through the top surface of the mounting seat, and the limiting blocks are fixedly installed on the sides of the plurality of moving blocks, and the sides of the plurality of limiting blocks and the sides of the plurality of moving blocks are slidably connected to the inner walls of the plurality of cross grooves respectively.

[0013] Preferably, cylinders are fixedly installed on the bottom surfaces of the multiple moving blocks, the outer walls of the multiple cylinders are slidably connected to the inner walls of the multiple arc grooves, the lower ends of the multiple cylinders are fixedly installed with limit plates, and the top surfaces of the multiple limit plates are slidably connected to the bottom surface of the rotating plate.

[0014] Preferably, a plurality of elastic members are fixedly mounted on the bottom surfaces of the plurality of concave frames, respectively, and a lower end of the plurality of elastic members is fixedly connected to the inner walls of the lower ends of the plurality of trough bodies, respectively.

[0015] Preferably, the upper ends of the plurality of pairs of connecting rods slide through the inner wall of the upper end of the groove body and extend to above the clamping block 1 and the clamping block 2, and a plurality of arc-shaped plates are provided.

[0016] Preferably, round blocks are fixedly mounted on the top surfaces of the multiple pairs of slide bars respectively, the bottom surfaces of the multiple round blocks are movably connected to the top surfaces of the multiple arc-shaped plates respectively, and the pressing plates are provided in plurality.

[0017] Preferably, the outer walls of the multiple pairs of sliding rods are respectively slidably sleeved with elastic members 2, the two ends of the multiple pairs of elastic members 2 are respectively fixedly connected to the bottom surfaces of the multiple arc plates and the top surfaces of the multiple pressing plates, and the bottom surfaces of the multiple pressing plates are respectively fixedly installed with anti-slip pads.

[0018] Preferably, through grooves are formed on the inner walls of one side of the multiple groove bodies, wedge blocks are slidably installed on the inner walls of the multiple through grooves, T-shaped blocks are fixedly installed on the bottom surfaces of one end of the multiple wedge blocks, T-shaped grooves are formed on the inner walls of the upper ends of the multiple groove bodies, the outer walls of the multiple T-shaped blocks are slidably connected to the inner walls of the multiple T-shaped grooves, and the outer walls of one side of the multiple T-shaped blocks are slidably connected to the inner walls of the multiple concave frames.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] When the clamping block 1 and the clamping block 2 clamp the outer wall of the workpiece, the outer wall of the workpiece pushes the wedge block to move, and when the wedge block moves, it pushes the concave frame to move downward, and the concave frame drives the connecting rod and the arc plate to move downward, and the arc plate drives the sliding rod and the pressing plate to contact the top edge of the workpiece. At the same time, the elastic force generated by the extrusion of the elastic member 2 causes the pressing plate to press and fix the top edge of the workpiece, so that during the workpiece processing, the workpiece is not easily offset or slipped from the upper side due to the influence of external force or its own weight, thereby ensuring the positioning accuracy of the workpiece and the processing quality of the final product.

[0021] By turning on the motor, the rotating shaft and the rotating plate are driven to rotate. The rotating plate cooperates with the arc groove and the cross groove to make the cylinder and the moving block move in a straight line. The moving block drives the clamping block 2 to move. The clamping block 2 cooperates with the clamping block 1 to clamp and fix the outer wall of the workpiece, so that the workpiece is not easily offset during processing, and multiple workpieces can be fixed at the same time, thereby improving the processing accuracy and efficiency of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic bottom view of the three-dimensional structure of the present invention;

[0024] Figure 3 It is an exploded view of the three-dimensional structure of the present invention;

[0025] Figure 4 It is a cross-sectional schematic diagram of the three-dimensional structure of the base of the present invention;

[0026] Figure 5 For the present invention Figure 1 Enlarged view of point A in the middle;

[0027] Figure 6 It is an exploded view of the three-dimensional structure of the wedge block of the present invention;

[0028] Figure 7 It is a schematic cross-sectional view of the three-dimensional structure of the clamping block 2 of the present invention;

[0029] Figure 8It is a cross-sectional schematic diagram of the three-dimensional structure of the concave frame of the present invention.

[0030] In the figure:

[0031] 1. Mounting seat; 101. Fixing ear; 102. Support rod; 103. Mounting plate;

[0032] 2. Fixing mechanism; 201. Support bar; 202. Circular plate; 203. Motor; 204. Rotating shaft; 205. Rotating plate; 206. Arc groove; 207. Clamping block 1; 208. Clamping block 2; 209. Moving block; 210. Limiting block; 211. Cross groove; 212. Cylinder; 213. Limiting plate;

[0033] 3. Pressing mechanism; 301. trough body; 302. concave frame; 303. elastic member 1; 304. connecting rod; 305. arc plate; 306. sliding rod; 307. round block; 308. pressing plate; 309. elastic member 2; 310. anti-slip pad; 311. through groove; 312. wedge block; 313. T-shaped block; 314. T-shaped groove. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0036] like Figure 1-Figure 8 As shown, the present application provides a multi-station fixture for a CNC machine tool, comprising: a mounting seat 1, a fixing ear 101 is fixedly mounted on the outer wall of the mounting seat 1, a support rod 102 is fixedly mounted on the bottom surface of the fixing ear 101, and a mounting plate 103 is fixedly mounted on the lower end of the support rod 102;

[0037] The fixing mechanism 2 is arranged above the mounting seat 1. The fixing mechanism 2 includes a clamping block 1 207 fixedly mounted on the top surface of the mounting seat 1. A clamping block 208 is arranged on one side of the clamping block 1 207. The fixing mechanism 2 is used to clamp and fix the workpiece;

[0038] Specifically, Figure 1-Figure 5As shown, two mounting holes are installed through the top surface of the mounting plate 103, three support bars 201 are fixedly installed on the bottom surface of the mounting seat 1, a circular plate 202 is fixedly installed on the other end of the three support bars 201, a motor 203 is fixedly installed on the bottom surface of the circular plate 202, a rotating shaft 204 is fixedly installed on the output end of the motor 203, and the upper end of the rotating shaft 204 rotates through the first bearing seat, penetrates the bottom surface of the circular plate 202 and extends to above the circular plate 202.

[0039] In this embodiment: the motor 203 is provided to drive the rotating shaft 204 to rotate, and the rotating shaft 204 drives the circular plate 202 to rotate. The provided mounting holes facilitate the installation and fixation of the device.

[0040] Specifically, Figure 1-Figure 5 As shown, a rotating plate 205 is fixedly installed on the upper end of the rotating shaft 204, and an arc groove 206 is opened through the top surface of the rotating plate 205. There are multiple clamping blocks 1 207 and clamping blocks 208, and moving blocks 209 are fixedly installed on the bottom surfaces of the multiple clamping blocks 208.

[0041] In this embodiment, the outer wall of the workpiece is clamped and fixed by providing a clamping block 1 207 and a clamping block 208, so that the workpiece is not easily deviated during processing.

[0042] Specifically, Figure 1-Figure 5 As shown, a plurality of cross slots 211 are formed through the top surface of the mounting seat 1 , and a plurality of limit blocks 210 are fixedly installed on the sides of the plurality of moving blocks 209 , and the sides of the plurality of limit blocks 210 and the sides of the plurality of moving blocks 209 are slidably connected to the inner walls of the plurality of cross slots 211 , respectively.

[0043] In this embodiment: the moving block 209 and the limiting block 210 are limited by the cross groove 211, so as to limit the clamping block 208.

[0044] Specifically, Figure 1-Figure 5 As shown, cylinders 212 are fixedly installed on the bottom surfaces of the multiple moving blocks 209, the outer walls of the multiple cylinders 212 are slidably connected to the inner walls of the multiple arc grooves 206, and the lower ends of the multiple cylinders 212 are fixedly installed with limit plates 213, and the top surfaces of the multiple limit plates 213 are slidably connected to the bottom surface of the rotating plate 205.

[0045] In this embodiment, the arc groove 206 is provided, and when the rotating plate 205 drives the arc groove 206 to rotate, the cylinder 212 and the moving block 209 can be driven to move.

[0046] The pressing mechanism 3 is arranged above the clamping block 207. The pressing mechanism 3 includes a pressing plate 308 located above the clamping block 207. An arc plate 305 is arranged above the pressing plate 308. The pressing mechanism 3 is used to press and fix the edge of the top surface of the workpiece. A plurality of clamping blocks 207 and a plurality of clamping blocks 208 are respectively provided with grooves 301. A plurality of grooves 301 have concave frames 302 slidably installed on the inner walls thereof. A pair of connecting rods 304 are respectively fixedly installed on the top surfaces of the plurality of concave frames 302. The upper ends of the plurality of connecting rods 304 are respectively fixedly connected to the bottom surfaces of the arc plate 305. A pair of sliding rods 306 are respectively slidably installed on the top surfaces of the plurality of arc plates 305. The lower ends of the plurality of sliding rods 306 are respectively fixedly connected to the top surfaces of the pressing plate 308.

[0047] Specifically, Figure 1-Figure 8 As shown, a plurality of elastic members 303 are fixedly installed on the bottom surfaces of the plurality of concave frames 302 , and the lower ends of the plurality of elastic members 303 are fixedly connected to the inner walls of the lower ends of the plurality of slot bodies 301 .

[0048] In this embodiment, an elastic member 303 is provided to apply elastic force to the concave frame 302 , so that the concave frame 302 has a continuous upward elastic force.

[0049] Specifically, Figure 1-Figure 8 As shown, the upper ends of the multiple pairs of connecting rods 304 slide through the inner wall of the upper end of the groove body 301 and extend to above the clamping block 1 207 and the clamping block 2 208, and multiple arc plates 305 are provided.

[0050] In this embodiment, when the concave frame 302 moves, the connecting rod 304 is driven to move, thereby driving the arc plate 305 to move up and down.

[0051] Specifically, Figure 1-Figure 8 As shown, round blocks 307 are fixedly installed on the top surfaces of multiple pairs of sliding rods 306, and the bottom surfaces of multiple round blocks 307 are movably connected to the top surfaces of multiple arc-shaped plates 305, and multiple pressing plates 308 are provided.

[0052] In this embodiment: the sliding rod 306 is limited by the provided round block 307, and the provided pressing plate 308 presses and fixes the top surface of the workpiece, so that the workpiece is not easily deviated during processing.

[0053] Specifically, Figure 1-Figure 8 As shown, the outer walls of the multiple pairs of sliding rods 306 are slidably sleeved with elastic members 309, and the two ends of the multiple pairs of elastic members 309 are respectively fixedly connected to the bottom surfaces of the multiple arc plates 305 and the top surfaces of the multiple pressing plates 308, and the bottom surfaces of the multiple pressing plates 308 are respectively fixedly installed with anti-slip pads 310.

[0054] In this embodiment: an elastic force is applied to the pressing plate 308 by means of the second elastic member 309, so that the pressing plate 308 presses and fixes the workpiece, and can be used for workpieces within a certain height range. An anti-slip pad 310 is provided to prevent the pressing plate 308 from sliding.

[0055] Specifically, Figure 1-Figure 8 As shown, a through groove 311 is formed on the inner wall of one side of the multiple groove bodies 301, a wedge block 312 is slidably installed on the inner wall of the multiple through grooves 311, a T-shaped block 313 is fixedly installed on the bottom surface of one end of the multiple wedge blocks 312, a T-shaped groove 314 is formed on the inner wall of the upper end of the multiple groove bodies 301, the outer walls of the multiple T-shaped blocks 313 are slidably connected to the inner walls of the multiple T-shaped grooves 314, and the outer walls of one side of the multiple T-shaped blocks 313 are slidably connected to the inner walls of the multiple concave frames 302.

[0056] In this embodiment, the T-shaped block 313 is limited by the T-shaped slot 314, thereby limiting the position of the wedge-shaped block 312, and the wedge-shaped block 312 pushes the concave frame 302 to move.

[0057] The specific solution is as follows: the workpiece is placed between the clamping block 1 207 and the clamping block 208, the motor 203 is turned on, the rotating shaft 204 and the rotating plate 205 are driven to rotate, the rotating plate 205 cooperates with the arc groove 206 and the cross groove 211 to make the cylinder 212 and the moving block 209 move in a straight line, the moving block 209 drives the clamping block 208 to move, the clamping block 208 cooperates with the clamping block 1 207 to clamp and fix the outer wall of the workpiece, so that the workpiece is not easily offset during processing, and multiple workpieces can be fixed at the same time, thereby improving the processing accuracy and efficiency of the workpiece, and at the same time, the clamping block 1 207 and the clamping block 2 208 clamps and fixes the outer wall of the workpiece, and the outer wall of the workpiece pushes the wedge block 312 to move. When the wedge block 312 moves, it pushes the concave frame 302 to move downward, and the concave frame 302 drives the connecting rod 304 and the arc plate 305 to move downward. The arc plate 305 drives the sliding rod 306 and the pressing plate 308 to contact the top edge of the workpiece. At the same time, the elastic force generated by the extrusion of the elastic member 309 causes the pressing plate 308 to press and fix the top edge of the workpiece. Therefore, during the processing of the workpiece, the workpiece is not easily offset or slipped from the upper side due to the influence of external force or its own weight, thereby ensuring the positioning accuracy of the workpiece and the processing quality of the final product.

[0058] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary; within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0059] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-station fixture for a CNC machine tool, comprising: A mounting seat (1), wherein a fixing ear (101) is fixedly mounted on an outer wall of the mounting seat (1), a support rod (102) is fixedly mounted on a bottom surface of the fixing ear (101), and a mounting plate (103) is fixedly mounted on a lower end of the support rod (102), characterized in that it further comprises: A plurality of fixing mechanisms (2), wherein the fixing mechanisms (2) are arranged above the mounting seat (1), the fixing mechanisms (2) comprising a clamping block 1 (207) fixedly mounted on the top surface of the mounting seat (1), a clamping block 2 (208) being arranged on one side of the clamping block 1 (207), and the fixing mechanisms (2) are used to clamp and fix a workpiece; A pressing mechanism (3), wherein the pressing mechanism (3) is arranged above the clamping block 1 (207), the pressing mechanism (3) comprises a pressing plate (308) located above the clamping block 1 (207), an arc-shaped plate (305) is arranged above the pressing plate (308), the pressing mechanism (3) is used to press and fix the edge of the top surface of the workpiece, a plurality of the clamping blocks 1 (207) and a plurality of the clamping blocks 2 (208) are respectively provided with grooves (301), a plurality of the inner walls of the grooves (301) are respectively slidably mounted with concave frames (302), a pair of connecting rods (304) are respectively fixedly mounted on the top surfaces of the plurality of the concave frames (302), and the upper ends of the plurality of pairs of connecting rods (304) are respectively fixedly connected to the bottom surfaces of the arc-shaped plates (305), A pair of slide bars (306) are slidably mounted on the top surfaces of the plurality of arc-shaped plates (305), and the lower ends of the plurality of pairs of slide bars (306) are fixedly connected to the top surfaces of the pressing plates (308). A through groove (311) is formed through the inner walls of one side of the plurality of groove bodies (301), and a wedge block (312) is slidably mounted on the inner walls of the plurality of through grooves (311). A T-shaped block (313) is fixedly mounted on the bottom surfaces of one end of the plurality of wedge blocks (312), and a T-shaped groove (314) is formed on the inner walls of the upper ends of the plurality of groove bodies (301). The outer walls of the plurality of T-shaped blocks (313) are slidably connected to the inner walls of the plurality of T-shaped grooves (314), and the outer walls of the plurality of T-shaped blocks (313) are slidably connected to the inner walls of the plurality of concave frames (302).

2. A multi-station fixture for a CNC machine tool according to claim 1, characterized in that: The top surface of the mounting plate (103) is provided with two mounting holes, the bottom surface of the mounting seat (1) is fixedly provided with three support bars (201), the other ends of the three support bars (201) are fixedly provided with a circular plate (202), the bottom surface of the circular plate (202) is fixedly provided with a motor (203), the output end of the motor (203) is fixedly provided with a rotating shaft (204), the upper end of the rotating shaft (204) is rotated through the bottom surface of the circular plate (202) through the first bearing seat and extends to the top of the circular plate (202), the upper end of the rotating shaft (204) is fixedly provided with a rotating plate (205), the top surface of the rotating plate (205) is provided with an arc groove (206), and the clamping block 1 (207) and the clamping block 2 (208) are both provided with a plurality of The bottom surfaces of the clamping blocks (208) are respectively fixedly mounted with moving blocks (209); the top surface of the mounting seat (1) is provided with a plurality of cross grooves (211); the sides of the moving blocks (209) are fixedly mounted with limit blocks (210); the sides of the limit blocks (210) and the sides of the moving blocks (209) are respectively slidably connected to the inner walls of the cross grooves (211); the bottom surfaces of the moving blocks (209) are respectively fixedly mounted with cylinders (212); the outer walls of the cylinders (212) are respectively slidably connected to the inner walls of the arc grooves (206); the lower ends of the cylinders (212) are respectively fixedly mounted with limit plates (213); the top surfaces of the limit plates (213) are slidably connected to the bottom surface of the rotating plate (205).

3. The multi-station fixture for a CNC machine tool according to claim 1, characterized in that: A plurality of elastic members one (303) are respectively fixedly mounted on the bottom surfaces of the plurality of concave frames (302), and the lower ends of the plurality of elastic members one (303) are respectively fixedly connected to the inner walls of the lower ends of the plurality of trough bodies (301).

4. The multi-station fixture for a CNC machine tool according to claim 3, characterized in that: The upper ends of the plurality of pairs of connecting rods (304) slide through the inner wall of the upper end of the groove body (301) and extend to above the clamping block 1 (207) and the clamping block 2 (208), and a plurality of the arc-shaped plates (305) are provided.

5. The multi-station fixture for a CNC machine tool according to claim 4, characterized in that: Round blocks (307) are fixedly mounted on the top surfaces of multiple pairs of the sliding rods (306), and the bottom surfaces of the multiple round blocks (307) are movably connected to the top surfaces of multiple arc-shaped plates (305), respectively. Multiple pressing plates (308) are provided.

6. The multi-station fixture for a CNC machine tool according to claim 5, characterized in that: The outer walls of the plurality of pairs of sliding rods (306) are slidably sleeved with elastic members 2 (309), and the two ends of the plurality of pairs of elastic members 2 (309) are respectively fixedly connected to the bottom surfaces of the plurality of arc-shaped plates (305) and the top surfaces of the plurality of pressing plates (308), and the bottom surfaces of the plurality of pressing plates (308) are respectively fixedly mounted with anti-slip pads (310).

Images