High-precision tool clamp

Abstract

The utility model discloses a high-precision work fixture, which relates to the technical field of fixtures, and specifically comprises a support plate, two parallel second strip-shaped seats are arranged above the support plate, a connecting plate is arranged at the top of each second strip-shaped seat, clamping plates are arranged on the sides, close to each other, of the two connecting plates, and gaps are arranged between the clamping plates and the edges of the connecting plates; guide shafts are vertically arranged at the two ends of the sides, away from each other, of the two clamping plates correspondingly, each guide shaft is movably arranged in a guide seat, and the guide seats are installed on the edge of the connecting plate. When the clamping device is used, a workpiece to be machined is placed between the clamping plates, the workpiece is clamped and fixed by the clamping seat, the force for clamping the workpiece is monitored by the pressure sensor in real time, the force for clamping the workpiece is always controlled within a preset range, it is guaranteed that the workpiece is fixed and cannot be damaged by clamping, and high-precision control over the clamping force is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of jigs, in particular to a high-precision tooling jig. Background Technique

[0002] When machining metal workpieces, the most common method is to fix the workpiece on the machine tool through reinforcement, and then drive the cutting tool by the machine tool to perform machining operations on the workpiece.

[0003] For example, a positioning tooling jig proposed in the patent application number "202122767036.0" includes a tooling base plate. A V-shaped positioning block is arranged on the tooling base plate. A clamping seat is arranged in front of the V-shaped positioning block. Two auxiliary clamping blocks are arranged between the V-shaped positioning block and the clamping seat. A first flange nut and a clamping bolt are arranged on the auxiliary clamping block.

[0004] When in use, the workpiece is placed between the V-shaped positioning block and the clamping seat, and then the workpiece is clamped by adjusting the clamping bolt. Since there are multiple clamping bolts, it is necessary to operate each clamping bolt, and the process is relatively cumbersome. At the same time, the clamping force of the clamping bolt depends entirely on the operator's feeling, and the clamping force cannot be accurately controlled, which is easy to damage the surface of the workpiece. For this reason, we propose a high-precision tooling jig. Content of the Utility Model

[0005] Aiming at the deficiency that the existing jig cannot monitor the clamping force of the workpiece, the utility model provides a high-precision tooling jig, which has the advantage that the clamping force of the workpiece can be monitored by a pressure sensor in real time, and solves the problems put forward in the above background technique.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0007] Design a high-precision tooling jig, including a support plate. Two parallel second strip-shaped seats are arranged above the support plate. A connecting plate is arranged on the top of each second strip-shaped seat. Clamping plates are arranged on one side of the two connecting plates close to each other. There is a gap between the clamping plate and the edge of the connecting plate;

[0008] At both ends of the two clamping plates on the side away from each other, guide shafts are respectively vertically arranged. Each guide shaft is movably placed in a guide seat, and the guide seats are all installed at the edge of the connecting plate;

[0009] A sensor support is also arranged on one side of the two connecting plates close to each other. A pressure sensor is arranged on the surface of the sensor support, and the pressure sensor is in contact with the side surface of the clamping plate;

[0010] Among them, both ends of each second strip-shaped seat are respectively connected to a driving device arranged below the support plate through a frame body, and the two second strip-shaped seats are driven to approach or move away from each other under the drive of the driving device.

[0011] Preferably, an external thread is provided at one end of the guiding shaft away from the clamping plate, and a nut is provided on the external thread.

[0012] Preferably, the driving device includes two telescopic mechanisms located at the bottom of the support plate. The two telescopic mechanisms are respectively perpendicular and oppositely arranged to the second strip-shaped seat. The two telescopic mechanisms are respectively installed on the seat body, and the seat body is connected to the bottom of the support plate;

[0013] The frame body includes a first strip-shaped seat respectively connected to the end of the telescopic mechanism. The two first strip-shaped seats are respectively located below the two second strip-shaped seats. Both ends of the second strip-shaped seat are respectively connected to both ends of the first strip-shaped seat through support arms. The telescopic end of the telescopic mechanism is connected to the mounting seat, and the mounting seats are respectively installed at the bottom of the first strip-shaped seat.

[0014] Preferably, the second strip-shaped seat is detachably connected to the top of the support arm.

[0015] Preferably, the connecting plate is detachably connected to the top of the second strip-shaped seat.

[0016] Preferably, at least two clamping seats are symmetrically installed on one side of the two clamping plates close to each other.

[0017] Preferably, two guide rails perpendicular to the first strip-shaped seat are installed on both sides of the bottom of the support plate, and the first strip-shaped seats are respectively connected to the guide rails through sliders.

[0018] Preferably, a plurality of support feet are provided at the edge of the support plate.

[0019] Compared with the prior art, when the present utility model is in use, the workpiece to be processed is placed between the clamping plates. The workpiece is clamped and fixed by the clamping seats. The force for clamping the workpiece is monitored by the pressure sensor in real time, so that the clamping force on the workpiece is always controlled within a preset range, ensuring that the workpiece is fixed and not damaged by clamping, and realizing high-precision control of the clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic three-dimensional structure diagram of the present utility model.

[0021] Figure 2 is a schematic structure diagram of the present utility model after the workpiece is placed between the clamping plates.

[0022] Figure 3 is a schematic structure diagram of the bottom of the present utility model.

[0023] In the figure: 1, support plate; 2, guide shaft; 3, connecting plate; 4, guide seat; 5, pressure sensor; 6, clamping seat; 7, sensor support; 8, support leg; 9, support arm; 10, first strip seat; 11, mounting seat; 12, slider; 13, guide rail; 14, seat body; 15, telescopic mechanism; 16, second strip seat; 17, clamping plate. Specific implementation manner

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 to 3 , the present invention provides a technical solution: a high-precision tooling fixture, including a support plate 1. A plurality of support legs 8 are provided at the edge of the support plate 1, and the bottom of the support legs can be fastened to the machine tool through bolts. As Figure 1 shown, two parallel second strip seats 16 are provided above the support plate 1. The two ends of each second strip seat 16 are respectively connected to a driving device arranged below the support plate 1 through a frame body;

[0026] As Figure 3 shown, the driving device includes two telescopic mechanisms 15 located at the bottom of the support plate 1. The telescopic mechanism 15 is one of an electric push rod, a hydraulic cylinder, or a cylinder, and can be freely selected according to the working conditions. The two telescopic mechanisms 15 are respectively perpendicular and oppositely arranged to the second strip seat 16. The two telescopic mechanisms 15 are respectively installed on the seat body 14, and the seat body 14 is installed at the bottom of the support plate 1;

[0027] As Figure 3 shown, the frame body includes first strip seats 10 respectively connected to the ends of the telescopic mechanisms 15. The two first strip seats 10 are respectively located below the two second strip seats 16. The two ends of the second strip seat 16 are respectively connected to the two ends of the first strip seat 10 through support arms 9, and the second strip seat 16 is detachably connected to the top of the support arm 9, that is, the two are fastened through bolts;

[0028] The telescopic end of the telescopic mechanism 15 is connected to the mounting seat 11. The mounting seat 11 is respectively installed at the bottom of the first strip seat 10. In this way, the telescopic mechanism 15 can drive the first strip seat 10 to move along the support plate 1, that is, to make the two second strip seats 16 approach or move away from each other.

[0029] Furthermore, each second strip seat 16 is provided with a connecting plate 3 at the top, and the connecting plate 3 is detachably connected to the top of the second strip seat 16, that is, the connecting plate 3 and the second strip seat 16 are fastened together by bolts, and a clamping plate 17 is provided on the side where the two connecting plates 3 are close to each other;

[0030] The two clamping plates 17 are used to clamp the workpiece. Figure 2 As shown, the workpiece to be processed is placed between the clamping plates 17 and then clamped by the two clamping plates 17. At least two clamping seats 6 are symmetrically installed on the side where the two clamping plates 17 are close to each other. The clamping seats are strip-shaped structures arranged around the surface of the workpiece. When the two clamping plates clamp the workpiece, the clamping seats 6 are against the surface of the workpiece to limit the workpiece.

[0031] Most importantly, in order to monitor the force between the clamping plate 17 and the workpiece, thereby preventing the workpiece from being damaged, a sensor holder 7 is provided on the side where the two connecting plates 3 are close to each other, and a pressure sensor 5 is provided on the surface of the sensor holder 7. The pressure sensor 5 contacts the side of the clamping plate 17, and a gap is provided between the clamping plate 17 and the edge of the connecting plate 3. The gap is used for the clamping plate 17 to move toward the pressure sensor 5 after being squeezed by the workpiece. Therefore, when the workpiece squeezes the clamping plate, the clamping plate 17 squeezes the pressure sensor 5. At this time, the force sensed by the pressure sensor 5 is the clamping force on the workpiece.

[0032] In order to prevent the clamping plate from shifting when subjected to force, guide shafts 2 are vertically provided at both ends of the two clamping plates 17 away from each other. Each guide shaft 2 is movably placed in a guide seat 4, and the guide seats 4 are installed at the edge of the connecting plate 3. An external thread is provided at the end of the guide shaft 2 away from the clamping plate 17, and a nut is provided on the external thread. At this time, the guide shaft 2 can guide the movement of the clamping plate 17, so that the clamping plate can only move facing the end face of the pressure sensor 5, making the monitored pressure data more accurate.

[0033] Specifically, when the utility model is in use, the pressure sensor and the telescopic mechanism are respectively connected to the control system of the machine tool, and then the workpiece is placed in the middle position of the support plate 1, and then the telescopic mechanism 15 drives the clamping seat 6 to clamp the workpiece, and the force of clamping the workpiece is monitored in real time by the pressure sensor, so that the force of clamping the workpiece is always at the set value; and the two second strip seats 16 can be opened and closed at the same time, so that the opening and closing distance between the two second strip seats 16 becomes larger, and a larger workpiece can be clamped, and the clamping force can be accurately controlled to achieve high-precision clamping.

[0034] Furthermore, in order to make the first bar seat 10 move more stably, Figure 3As shown, two guide rails 13 perpendicular to the first strip seat 10 are installed on both sides of the bottom of the support plate 1. The first strip seat 10 is respectively connected to the guide rails 13 through sliders 12, making the support of the first strip seat 10 better.

[0035] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Moreover, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision fixture, comprising a support plate (1), characterized in that: Two parallel second strip seats (16) are arranged above the support plate (1), a connecting plate (3) is arranged on the top of each second strip seat (16), a clamping plate (17) is arranged on the side where the two connecting plates (3) are close to each other, and a gap is arranged between the clamping plate (17) and the edge of the connecting plate (3); Two guide shafts (2) are vertically arranged at both ends of the side away from each other of the two clamping plates (17), and each guide shaft (2) is movably placed in a guide seat (4), and the guide seats (4) are installed at the edge of the connecting plate (3); A sensor support (7) is also provided on the side where the two connecting plates (3) are close to each other. A pressure sensor (5) is provided on the surface of the sensor support (7). The pressure sensor (5) is in contact with the side of the clamping plate (17). The two ends of each second bar-shaped seat (16) are respectively connected to a driving device arranged below the support plate (1) through a frame, and the two second bar-shaped seats (16) are driven by the driving device to move closer to or farther from each other.

2. A high-precision fixture according to claim 1, characterized in that: An end of the guide shaft (2) away from the clamping plate (17) is provided with an external thread, and a nut is provided on the external thread.

3. A high-precision fixture according to claim 1, characterized in that: The driving device comprises two telescopic mechanisms (15) located at the bottom of the support plate (1), the two telescopic mechanisms (15) are respectively arranged perpendicularly and oppositely to the second strip seat (16), the two telescopic mechanisms (15) are respectively installed on the seat body (14), and the seat body (14) is connected to the bottom of the support plate (1); The frame body comprises first bar seats (10) respectively connected to the ends of the telescopic mechanism (15); the two first bar seats (10) are respectively located below the two second bar seats (16); the two ends of the second bar seats (16) are respectively connected to the two ends of the first bar seats (10) through supporting arms (9); the telescopic ends of the telescopic mechanism (15) are connected to the mounting seats (11); and the mounting seats (11) are respectively mounted on the bottoms of the first bar seats (10).

4. A high-precision fixture according to claim 3, characterized in that: The second strip seat (16) is detachably connected to the top of the support arm (9).

5. A high-precision fixture according to claim 3, characterized in that: The connecting plate (3) is detachably connected to the top of the second strip seat (16).

6. A high-precision fixture according to any one of claims 1 to 5, characterized in that: At least two clamping seats (6) are symmetrically mounted on one side of the two clamping plates (17) that are close to each other.

7. A high-precision fixture according to any one of claims 3 to 5, characterized in that: Two guide rails (13) perpendicular to the first strip seat (10) are installed on both sides of the bottom of the support plate (1), and the first strip seat (10) is connected to the guide rails (13) via sliders (12) respectively.

8. A high-precision fixture according to claim 6, characterized in that: A plurality of supporting feet (8) are provided at the edge of the supporting plate (1).

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