Positioning tool for machining

Abstract

The utility model discloses a positioning frock for machining belongs to positioning frock field, including base, the base top fixedly connected with the placing table, and the movable setting of placing table has clamping mechanism, and clamping mechanism includes two groups of mobile seat that sets up mutually perpendicularly, and the mobile seat of each group is opposite and is set up, and mobile seat sliding connection is established in placing table, and the mobile seat top fixedly connected with clamping plate, and the base is provided with moving mechanism in. Advantageous effects at: setting moving mechanism, poking mechanism and operating mechanism, through the setting of two groups of transmission assemblies, the four around of workpiece of two groups of clamping plates is clamped simultaneously, improves the clamping speed, and after one group of clamping plate is pressed against the both sides of workpiece, through operating mechanism, another group of clamping plate can conveniently continue to move until the four around of workpiece is clamped, convenient to use, and the scope of application is wide, and the positioning efficiency of machining is improved.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixtures, and in particular to a positioning fixture for machining. Background Technology

[0002] Mechanical equipment refers to machinery that utilizes the internal structure of various devices to achieve the required functions through mechanical transmission. In a broad sense, mechanical equipment, like other machines, processes, materials, or devices, is an indispensable part of industrial production activities. Positioning tooling is required when processing parts such as petrochemical equipment parts and kiln equipment parts.

[0003] A search revealed a Chinese patent publication number CN219767450U, which discloses a positioning fixture for machining mechanical parts. This patent includes a base plate and supporting legs. A positioning mechanism is positioned above the base plate, comprising a fixed plate, a placement plate, a movable plate, a clamping plate, and a connecting rod. The bottom of the fixed plate is fixedly connected to the top of the base plate, the top of the fixed plate is fixedly connected to the bottom of the placement plate, the top of the placement plate is slidably connected to the bottom of the movable plate, the top of the movable plate is fixedly connected to the bottom of the clamping plate, and the positioning plate is fixedly installed on the bottom of the connecting rod. This device enables the clamping and fixing of mechanical parts of different specifications, solving the problem that existing positioning fixtures cannot clamp and fix, thus hindering machining. It also effectively prevents the mechanical parts from moving, increasing the applicability of the positioning work. However, the clamping and fixing operation of this device is relatively cumbersome, requiring the simultaneous operation of four clamping plates to place the workpiece. Furthermore, in this field, devices that require machining workpieces from multiple angles are often complex to operate, difficult to adapt to different workpiece specifications, cumbersome to use, and affect clamping and machining efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a positioning fixture for machining in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A positioning fixture for machining includes a base, a placement table fixedly connected to the top of the base, a machining mechanism mounted on the base, and a clamping mechanism movably mounted on the placement table. The clamping mechanism includes two sets of mutually perpendicular movable seats, each set of movable seats being arranged opposite to each other. The movable seats are slidably connected to the placement table, and a clamping plate is fixedly connected to the top of the movable seats. A moving mechanism is provided inside the base, and the moving mechanism includes a first gear and a second gear. The first gear is rotatably connected inside the base, and the second gear is rotatably connected to the first gear. A first transmission component is provided on the first gear, and a second transmission component is provided on the second gear. The first transmission component is used to drive one set of movable seats to move relative to each other, and the second transmission component is used to drive the other set of movable seats to move relative to each other. A toggle mechanism is installed inside the base.

[0007] The actuating mechanism includes a third rack and a fourth rack arranged in parallel. Each of the third rack and the fourth rack is threaded with a screw. The screws are rotatably connected to the base. The third rack meshes with the first gear, and the fourth rack meshes with the second gear. An operating mechanism is provided on the front side of the base. The operating mechanism can drive the two screws to rotate synchronously or drive one screw to rotate individually.

[0008] Preferably, the operating mechanism includes two rotary handles, each fixedly connected to one end of the screw, and a switching component is provided on the rotary handle.

[0009] Preferably, the switching assembly includes a third gear and a fourth gear that cooperate with each other, a groove is provided on a rotating handle, the third gear is slidably disposed on the groove on the rotating handle, and the fourth gear is fixedly connected to the rotating handle away from the third gear.

[0010] Preferably, a guide rod is slidably connected to racks No. 3 and No. 4, and the guide rod is fixedly connected inside the base.

[0011] Preferably, the first transmission assembly includes two opposing first connecting rods, which are fixedly connected to the bottom of a set of movable seats. A first rack is fixedly connected to the first connecting rod and meshes with a first gear. The second transmission assembly includes two opposing second connecting rods, which are fixedly connected to the bottom of another set of movable seats. A second rack is fixedly connected to the second connecting rod and meshes with a second gear.

[0012] Preferably, the first connecting rod and the second connecting rod are located in different horizontal planes.

[0013] Preferably, the placement platform has several guide grooves arranged in a ring, and a guide rod is fixedly connected in the guide groove of the base, with the movable seat slidably connected to the guide rod.

[0014] Preferably, an anti-slip layer is provided on the opposite surfaces of the clamping plates.

[0015] The beneficial effects are as follows: The set of moving mechanism, toggle mechanism and operating mechanism, through the setting of two sets of transmission components, the two sets of clamping plates are clamped on all four sides of the workpiece in a synchronous manner, which improves the clamping speed. After one set of clamping plates is pressed against both sides of the workpiece, the operating mechanism can easily make the other set of clamping plates continue to move until the workpiece is clamped on all four sides. It is convenient to use, has a wide range of applications, and improves the positioning efficiency of machining.

[0016] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of a positioning fixture for machining according to the present invention;

[0019] Figure 2 This is a cross-sectional view of a positioning fixture for machining as described in this utility model;

[0020] Figure 3 This is a schematic diagram of the bottom side of the placement platform of the positioning fixture for machining described in this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the base of a positioning fixture for machining as described in this utility model;

[0022] Figure 5 This is a schematic diagram showing the connection between the actuating mechanism and the operating mechanism of a positioning fixture for machining as described in this utility model;

[0023] Figure 6 This is a schematic diagram of the moving mechanism of a positioning fixture for machining according to the present invention.

[0024] The reference numerals in the attached drawings are explained as follows: 101, base; 102, placement platform; 103, guide groove; 104, guide rod; 201, frame; 202, hydraulic cylinder; 203, lifting seat; 204, vertical rod; 205, processing component; 301, moving seat; 302, clamping plate; 303, anti-slip layer; 401, connecting rod No. 1; 402, rack No. 1; 403, gear No. 1; 404, connecting rod No. 2; 405, rack No. 2; 406, gear No. 2; 501, rack No. 3; 502, rack No. 4; 503, guide rod; 504, screw; 601, rotating handle; 602, groove; 603, third gear; 604, fourth gear. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] like Figures 1-6 As shown, a positioning fixture for machining includes a base 101, a placement platform 102 bolted to the top of the base 101, a machining mechanism mounted on the base 101, and a clamping mechanism movably mounted on the placement platform 102. The clamping mechanism includes two sets of mutually perpendicular movable seats 301, each set of movable seats 301 being opposite to each other. The movable seats 301 are slidably connected to the placement platform 102, and a clamping plate 302 bolted to the top of the movable seats 301. A moving mechanism is provided inside the base 101, including a first gear 403 and a second gear 406. The first gear 403 is rotatably connected inside the base 101, and the second gear 406 is rotatably connected to the first gear 403. A first transmission component is provided on the first gear 403, and a second transmission component is provided on the second gear 406. The first transmission component is used to drive one set of movable seats 301 to move relative to each other, and the second transmission component is used to drive the other set of movable seats 301 to move relative to each other. A toggle mechanism is installed inside the base 101.

[0029] The actuating mechanism includes a third rack 501 and a fourth rack 502 arranged in parallel. Guide rods 503 are slidably connected to the third rack 501 and the fourth rack 502. The guide rods 503 are bolted to the base 101. Screws 504 are threaded onto the third rack 501 and the fourth rack 502 respectively. The rotation direction of the first gear 403 and the second gear 406 is determined by the thread direction of the screws 504. During installation, attention must be paid to the thread direction of the two screws 504 to ensure that the moving base 301 can move closer to or further away synchronously. The screw 504 is rotatably connected inside the base 101. The third rack 501 meshes with the first gear 403, and the fourth rack 502 meshes with the second gear 406. An operating mechanism is provided on the front side of the base 101. The operating mechanism can drive the two screws 504 to rotate synchronously or drive one screw 504 to rotate individually. When the two screws 504 rotate synchronously, the two sets of moving seats 301 can move synchronously and move closer to the periphery of the workpiece, which can speed up the positioning speed and can clamp parts of various shapes and specifications, with a wide range of applications.

[0030] In this embodiment, the processing mechanism includes a frame 201, which is bolted to the top of the base 101. A hydraulic cylinder 202 is bolted to the frame 201, and a lifting seat 203 is bolted to the output end of the hydraulic cylinder 202. Several vertical rods 204 are bolted to the lifting seat 203, and the vertical rods 204 are slidably connected to the frame 201. A processing component 205 is installed at the bottom of the lifting seat 203, and different processing components 205 can be replaced according to the needs of machining.

[0031] In this embodiment, the operating mechanism includes two rotating handles 601, which are respectively bolted to one end of the screw 504. A switching assembly is provided on each rotating handle 601, comprising a cooperating third gear 603 and a fourth gear 604. A groove 602 is formed on one rotating handle 601, and the third gear 603 is slidably disposed on the groove 602. The fourth gear 604 is bolted to the rotating handle 601 located away from the third gear 603. By sliding the third gear 603, the position of the third gear 603 in the groove can be changed. The position within 602 switches the meshing state of the third gear 603 and the fourth gear 604. When the third gear 603 and the fourth gear 604 are meshed, the two rotary handles 601 can rotate synchronously, thereby synchronously driving the screw 504 to rotate. The screw 504 drives the third rack 501 and the fourth rack 502 to move simultaneously, thereby causing the first gear 403 and the second gear 406 to rotate simultaneously, and driving the first connecting rod 401 and the second connecting rod 404 to move simultaneously, thereby accelerating the clamping speed of each moving seat 301 and the clamping plate 302 on the workpiece, making it convenient to use.

[0032] In this embodiment, the first transmission assembly includes two opposing first connecting rods 401, which are bolted to the bottom of a set of movable seats 301. A first rack 402 is welded onto the first connecting rod 401, and the first rack 402 meshes with a first gear 403. The second transmission assembly includes two opposing second connecting rods 404, which are bolted to the bottom of another set of movable seats 301. A second rack 405 is welded onto the second connecting rod 404, and the second rack 405 meshes with a second gear 406. The first connecting rods 401 and the second connecting rods 404 are located in different horizontal planes to avoid interference and jamming when the first connecting rods 401 and the second connecting rods 404 move.

[0033] In this embodiment, the placement platform 102 has several annularly arranged guide grooves 103. The guide grooves 103 of the base 101 are connected to guide rods 104 by bolts. The movable seat 301 is slidably connected to the guide rods 104. The guide rods 104 guide the movable seat 301 and optimize the clamping effect.

[0034] In this embodiment, an anti-slip layer 303 is provided on the opposite surface of the clamping plate 302. The anti-slip layer 303 prevents the workpiece from shaking or shifting when it is clamped.

[0035] Working Principle: In the initial state of use, the movable seat 301 is in a remote position. During positioning and clamping, the workpiece is placed on top of the placement table 102. The operator rotates one of the rotating handles 601. Through the arrangement of the third gear 603 and the fourth gear 604, the two rotating handles 601 rotate synchronously. During this process, the third gear 603 and the fourth gear 604 are meshed, allowing the two rotating handles 601 to rotate synchronously, thereby synchronously driving the screw 504 to rotate. The two screws 504 drive the third rack 501 and the fourth rack 502 to move simultaneously along the axial direction of the guide rod 503, thus causing the first gear 403 and the second gear 406 to move simultaneously. The rotation drives the two sets of first racks 402 and second connecting rods 404 to move simultaneously. The first gear 403 drives the first connecting rod 401 to move, while the second rack 405 drives the second connecting rod 404 to move, thereby accelerating the clamping speed of each moving seat 301 and clamping plate 302 on the workpiece. After one set of clamping plates 302 presses against both sides of the device, the third gear 603 is shifted to disengage the third gear 603 from the fourth gear 604. The rotating handle 601 continues to rotate until all clamping plates 302 are pressed against the side of the workpiece, completing the workpiece positioning and clamping action. The hydraulic cylinder 202 and the processing component 205 can then work together to perform machining operations.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A positioning fixture for machining, comprising a base (101), wherein a placement platform (102) is fixedly connected to the top of the base (101), and a machining mechanism is mounted on the base (101), characterized in that: A clamping mechanism is movably arranged on the placement platform (102). The clamping mechanism includes two sets of mutually perpendicular movable seats (301). Each set of movable seats (301) is arranged opposite to each other. The movable seats (301) are slidably connected to the placement platform (102). A clamping plate (302) is fixedly connected to the top of the movable seats (301). A moving mechanism is arranged inside the base (101). The moving mechanism includes a first gear (403) and a second gear (406). The first gear (403) is rotatably connected inside the base (101). The second gear (406) is rotatably connected to the first gear (403). A first transmission component is arranged on the first gear (403). A second transmission component is arranged on the second gear (406). The first transmission component is used to drive one set of movable seats (301) to move relative to each other. The second transmission component is used to drive the other set of movable seats (301) to move relative to each other. A toggle mechanism is installed inside the base (101). The actuating mechanism includes a third rack (501) and a fourth rack (502) arranged in parallel. Each of the third rack (501) and the fourth rack (502) is threaded with a screw (504). The screw (504) is rotatably connected to the base (101). The third rack (501) meshes with the first gear (403), and the fourth rack (502) meshes with the second gear (406). An operating mechanism is provided on the front side of the base (101). The operating mechanism can drive the two screws (504) to rotate synchronously or drive one screw (504) to rotate individually.

2. The positioning fixture for machining according to claim 1, characterized in that: The operating mechanism includes two rotating handles (601), which are fixedly connected to one end of the screw (504) respectively, and a switching component is provided on the rotating handle (601).

3. A positioning fixture for machining according to claim 2, characterized in that: The switching assembly includes a third gear (603) and a fourth gear (604) that cooperate with each other. A groove (602) is provided on a rotating handle (601). The third gear (603) is slidably disposed on the groove (602) on the rotating handle (601). The fourth gear (604) is fixedly connected to the rotating handle (601) away from the third gear (603).

4. A positioning fixture for machining according to claim 1, characterized in that: A guide rod (503) is slidably connected to the third rack (501) and the fourth rack (502), and the guide rod (503) is fixedly connected to the base (101).

5. A positioning fixture for machining according to claim 1, characterized in that: The first transmission assembly includes two opposing first connecting rods (401), which are fixedly connected to the bottom of a set of movable seats (301). A first rack (402) is fixedly connected to the first connecting rod (401), and the first rack (402) meshes with the first gear (403). The second transmission assembly includes two opposing second connecting rods (404), which are fixedly connected to the bottom of another set of movable seats (301). A second rack (405) is fixedly connected to the second connecting rod (404), and the second rack (405) meshes with the second gear (406).

6. A positioning fixture for machining according to claim 5, characterized in that: The first connecting rod (401) and the second connecting rod (404) are located in different horizontal planes.

7. A positioning fixture for machining according to claim 1, characterized in that: The placement platform (102) has several annularly arranged guide grooves (103), and a guide rod (104) is fixedly connected in the guide groove (103) of the base (101), and the movable seat (301) is slidably connected to the guide rod (104).

8. A positioning fixture for machining according to claim 1, characterized in that: An anti-slip layer (303) is provided on the opposite surface of the clamping plate (302).

Images