High-positioning-precision tool clamp for CNC machine tool

Abstract

The utility model discloses a high-positioning-accuracy tool clamp for a CNC (computer numerical control) machine tool, which comprises a bottom plate, a side plate, a support plate, a first air cylinder, a second air cylinder, a first pressing plate, a second pressing plate, a first positioning plate, a second positioning plate, a third positioning plate, a fourth positioning plate, an inner support plate and a positioning column. The positioning columns are arranged on the supporting plate in a protruding mode, the lower end wall of the rectangular sound box aluminum frame abuts against the upper end walls of the positioning columns, and the inner side wall of the rectangular sound box aluminum frame can abut against the side wall of the inner supporting plate, the outer side wall of the first positioning plate and the outer side wall of the fourth positioning plate. The outer side wall of the rectangular sound box aluminum frame can abut against the inner side walls of the first pressing plate, the second pressing plate, the second positioning plate and the third positioning plate. According to the technical scheme, the rectangular sound box aluminum frame can be effectively prevented from deforming in the clamping and positioning process, and the positioning precision is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a tooling fixture for a CNC machine tool with high positioning accuracy. Background Art

[0002] A fixture is a device used to fix the object to be processed in the mechanical manufacturing process so that it occupies the correct position for construction or inspection. It is also called a fixture. A fixture usually consists of a positioning element (to determine the correct position of the workpiece in the fixture), a clamping device, a tool guiding element (to determine the relative position of the tool and the workpiece or to guide the direction of the tool), a dividing device (to enable the workpiece to complete the processing of several stations in one installation, and there are two types: a rotary dividing device and a linear moving dividing device), a connecting element, and a fixture base (fixture base). For example, welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc., among which machine tool fixtures are the most common and are often referred to as fixtures. When processing a workpiece on a machine tool, in order to make the surface of the workpiece meet the technical requirements of size, geometry, and relative position accuracy with other surfaces specified in the drawing, the workpiece must be installed (positioned) and clamped (clamped) before processing.

[0003] At present, in CNC machine tools, the tooling fixtures used for rectangular aluminum audio frames are prone to deformation during the clamping process, resulting in poor positioning accuracy of the aluminum frames. Utility Model Content

[0004] The main purpose of the utility model is to provide a tooling fixture for CNC machine tools with high positioning accuracy, aiming to solve the technical problem that the existing tooling fixture for rectangular audio aluminum frames easily causes the aluminum frames to deform during the clamping process, resulting in poor positioning accuracy of the aluminum frames.

[0005] To achieve the above-mentioned purpose, the utility model provides a tooling fixture for CNC machine tools with high positioning accuracy, which is used for clamping and positioning of rectangular aluminum audio frames, and is characterized in that it includes a bottom plate, a side plate, a support plate, a first cylinder, a second cylinder, a first pressure plate, a second pressure plate, a first positioning plate, a second positioning plate, a third positioning plate, a fourth positioning plate, an inner support plate and a positioning column, the side plates are respectively arranged on both sides of the upper end wall of the bottom plate, the two ends of the support plate are respectively fixedly connected to the upper end portions of the side plates, the first cylinder and the second cylinder are respectively horizontally arranged at the front end portion and one side of the support plate, the first pressure plate and the second pressure plate are respectively fixedly connected to the cylinder rods of the first cylinder and the second cylinder, and the first positioning plate and the second positioning plate are respectively The third positioning plate and the fourth positioning plate are respectively arranged at the left and right ends of the support plate, the first positioning plate, the second positioning plate, the third positioning plate and the third positioning plate are surrounded by a rectangular groove, the inner support plate can be slidably arranged in the rectangular groove, the positioning column is protruded on the support plate, and the lower end wall of the rectangular audio aluminum frame is abutted against the upper end wall of the positioning column, the inner side wall of the rectangular audio aluminum frame can be abutted against the side wall of the inner support plate, the outer side wall of the first positioning plate and the outer side wall of the fourth positioning plate, and the outer side wall of the rectangular audio aluminum frame can be abutted against the inner side wall of the first pressing plate, the second pressing plate, the second positioning plate and the third positioning plate.

[0006] Optionally, it also includes a third cylinder and a pull rod, the third cylinder is vertically arranged in the middle of the upper end wall of the base plate, the pull rod can be slidably inserted into the support plate setting, the lower end of the pull rod is fixedly connected to the cylinder rod of the third cylinder, the inner side wall of the upper end of the first positioning plate and the lower end wall of the front end of the inner support plate are respectively provided with a first wedge surface and a second wedge surface, the first wedge surface and the second wedge surface are slidably abutted, an elliptical hole is recessed in the middle of the upper end of the inner support plate, the upper end of the pull rod can be slidably inserted into the elliptical hole setting, the upper end of the pull rod is provided with a limiting flange, the inner side wall of the elliptical hole is convexly provided with a limiting groove, and the limiting flange is slidably abutted against the inner bottom wall of the limiting groove.

[0007] Optionally, it also includes a guide plate, which is protruding from both sides of the upper end wall of the support plate, and a guide groove is recessed at both ends of the rear end wall of the inner support plate, and the upper end of the guide plate can be slidably embedded in the guide groove.

[0008] Optionally, the inner side wall of the upper end portion of the guide plate and the inner side wall of the upper end portion of the guide groove are both arranged in an inclined structure, and the inner side wall of the upper end portion of the guide plate and the inner side wall of the upper end portion of the guide groove can be slidably abutted.

[0009] Optionally, it further includes a cylinder mounting plate, which is respectively arranged at the front end and one side of the support plate, and the first cylinder and the second cylinder are respectively detachably arranged on the cylinder mounting plate by bolts.

[0010] Optionally, a U-shaped hole is respectively formed on the side walls at both ends of the bottom plate.

[0011] The technical solution of the utility model has the following beneficial effects: the technical solution of the utility model is that the first positioning plate and the second positioning plate are respectively arranged at the front end and the rear end of the support plate, the third positioning plate and the fourth positioning plate are respectively arranged at the left and right ends of the support plate, the first positioning plate, the second positioning plate, the third positioning plate and the third positioning plate are surrounded to form a rectangular groove, the inner support plate can be slidably arranged in the rectangular groove, the positioning column is convexly arranged on the support plate, and the lower end wall of the rectangular audio aluminum frame is abutted against the upper end wall of the positioning column, and the inner side wall of the rectangular audio aluminum frame can be aligned with the side wall of the inner support plate The outer wall of the first positioning plate and the outer wall of the fourth positioning plate are abutted, and the outer wall of the rectangular audio aluminum frame can be abutted with the inner wall of the first pressing plate, the second pressing plate, the second positioning plate and the third positioning plate. Through the structural design of external pressure and internal support, all forces are applied to the same reference angle of the rectangular audio aluminum frame, thereby effectively avoiding deformation of the rectangular audio aluminum frame during the clamping and positioning process, effectively improving the positioning accuracy of the rectangular audio aluminum frame, and effectively solving the problem of being unable to position due to the large tolerance of the incoming materials of the rectangular audio aluminum frame. The structure is simple, the operation is convenient, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0013] Figure 1 This is a schematic diagram of the overall structure of a fixture for a CNC machine tool with high positioning accuracy according to an embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the exploded structure of a fixture for a CNC machine tool with high positioning accuracy according to an embodiment of the utility model;

[0015] Figure 3 This is another exploded structural schematic diagram of a fixture for a CNC machine tool with high positioning accuracy according to an embodiment of the utility model;

[0016] Figure 4This is a schematic structural diagram of a rectangular sound aluminum frame of a fixture for a CNC machine tool with high positioning accuracy according to an embodiment of the utility model;

[0017] Figure 5 This is a structural schematic diagram of a rectangular sound aluminum frame of a CNC machine tool fixture with high positioning accuracy in a clamping and positioning state according to an embodiment of the utility model.

[0018] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0022] The utility model provides a tooling fixture for a CNC machine tool with high positioning accuracy.

[0023] like Figures 1 to 5As shown, in one embodiment of the utility model, the tooling fixture for CNC machine tools with high positioning accuracy is used for clamping and positioning of a rectangular audio aluminum frame 200. The tooling fixture includes a bottom plate 101, a side plate 102, a support plate 103, a first cylinder 104, a second cylinder 105, a first pressing plate 106, a second pressing plate 107, a first positioning plate 108, a second positioning plate 109, a third positioning plate 110, a fourth positioning plate 111, an inner support plate 112 and a positioning column 113. The side plates 102 are respectively arranged on both sides of the upper end wall of the bottom plate 101, and the two ends of the support plate 103 are respectively fixedly connected to the upper end of the side plate 102. The first cylinder 104 and the second cylinder 105 are respectively horizontally arranged at the front end and one side of the support plate 103. The first pressing plate 106 and the second pressing plate 107 are respectively fixedly connected to the cylinder rods of the first cylinder 104 and the second cylinder 105. The first positioning plate 108 and the third positioning plate 110 are respectively fixedly connected to the cylinder rods of the first cylinder 104 and the second cylinder 105. The second positioning plates 109 are respectively arranged at the front end and the rear end of the supporting plate 103, the third positioning plate 110 and the fourth positioning plate 111 are respectively arranged at the left and right ends of the supporting plate 103, the first positioning plate 108, the second positioning plate 109, the third positioning plate 110 and the third positioning plate 111 are surrounded to form a rectangular groove 114, the inner support plate 112 can be slidably arranged in the rectangular groove 114, the positioning column 113 is protruded on the supporting plate 103, and the lower end wall of the rectangular audio aluminum frame 200 is abutted against the upper end wall of the positioning column 113, the inner side wall of the rectangular audio aluminum frame 200 can be abutted against the side wall of the inner support plate 112, the outer side wall of the first positioning plate 108 and the outer side wall of the fourth positioning plate 111, and the outer side wall of the rectangular audio aluminum frame 200 can be abutted against the inner side wall of the first pressing plate 106, the second pressing plate 107, the second positioning plate 109 and the third positioning plate 110.

[0024] Specifically, in this embodiment, a third cylinder 115 and a pull rod 116 are also included. The third cylinder 115 is vertically arranged in the middle of the upper end wall of the bottom plate 101. The pull rod 116 can be slidably arranged in the support plate 103 up and down. The lower end of the pull rod 116 is fixedly connected to the cylinder rod of the third cylinder 115. The inner side wall of the upper end of the first positioning plate 108 and the lower end wall of the front end of the inner support plate are respectively provided with a first wedge surface 1081 and a second wedge surface 1121. The first wedge surface 1081 and the second wedge surface 1121 are slidably abutted. An elliptical hole 1122 is recessed in the middle of the upper end of the inner support plate 112, and the upper end of the pull rod 116 can be slidably inserted into the elliptical hole 1122. A limiting flange 1161 is provided at the upper end of the pull rod 116, and a limiting groove 1123 is convexly provided on the inner side wall of the elliptical hole 1122. The limiting flange 1161 is slidably abutted against the inner bottom wall of the limiting groove 1123. The inner support plate is driven to slide left and right by the third cylinder and the pull rod to realize the positioning of the rectangular audio aluminum frame, and at the same time, the rectangular audio aluminum frame can be prevented from being deformed during the clamping and positioning process.

[0025] Specifically, in this embodiment, it also includes a guide plate 117, which is protruded on both sides of the upper end wall of the support plate 103, and a guide groove 1124 is recessed at both ends of the rear end wall of the inner support plate 112. The upper end portions of the guide plates 117 can be slidably embedded in the guide grooves 1124, which plays a good guiding role and avoids the inner support plate from tilting, which affects the positioning accuracy.

[0026] Specifically, in this embodiment, the inner side wall of the upper end of the guide plate 117 and the inner side wall of the upper end of the guide groove 1124 are both arranged in an inclined structure, and the inner side wall of the upper end of the guide plate 117 and the inner side wall of the upper end of the guide groove 1124 can be slidably abutted, so that there is no gap when the inner support plate slides left and right, thereby improving the positioning accuracy.

[0027] Specifically, in this embodiment, a cylinder mounting plate 118 is further included. The cylinder mounting plate 118 is respectively arranged at the front end and one side of the support plate 103. The first cylinder 104 and the second cylinder 105 are respectively detachably arranged on the cylinder mounting plate 118 by bolts.

[0028] Specifically, in this embodiment, two end side walls of the bottom plate 101 are respectively provided with a U-shaped hole 1011 to facilitate installation and fixation of the bottom plate.

[0029] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A fixture for CNC machine tools with high positioning accuracy, used for clamping and positioning rectangular sound aluminum frames, characterized in that: The invention comprises a bottom plate, a side plate, a support plate, a first cylinder, a second cylinder, a first pressure plate, a second pressure plate, a first positioning plate, a second positioning plate, a third positioning plate, a fourth positioning plate, an inner support plate and a positioning column, wherein the side plates are respectively arranged on both sides of the upper end wall of the bottom plate, and the two ends of the support plate are respectively fixedly connected to the upper ends of the side plates, the first cylinder and the second cylinder are respectively horizontally arranged at the front end and one side of the support plate, the first pressure plate and the second pressure plate are respectively fixedly connected to the cylinder rods of the first cylinder and the second cylinder, the first positioning plate and the second positioning plate are respectively arranged at the front end and the rear end of the support plate, and the third positioning plate and the fourth The positioning plates are respectively arranged at the left and right ends of the supporting plate, the first positioning plate, the second positioning plate, the third positioning plate and the third positioning plate together form a rectangular groove, the inner support plate can be slidably arranged in the rectangular groove, the positioning column is protruded on the supporting plate, and the lower end wall of the rectangular audio aluminum frame is abutted against the upper end wall of the positioning column, the inner side wall of the rectangular audio aluminum frame can be abutted against the side wall of the inner support plate, the outer side wall of the first positioning plate and the outer side wall of the fourth positioning plate, and the outer side wall of the rectangular audio aluminum frame can be abutted against the inner side wall of the first pressing plate, the second pressing plate, the second positioning plate and the third positioning plate.

2. The fixture for CNC machine tools with high positioning accuracy according to claim 1, characterized in that: The cam is an air-gapped, non-movable, and has a camming mechanism which allows the cam to move freely in and out of the air-gapped, non-movable, and camming member to move freely in and out of the air-gapped, non-movable, camming member to move freely in and out of the air-gapped, non-movable, camming member to move freely in and out of the air-gapped, non-movable, camming member to move freely in and out of the air-gapped, non-movable, camming member to move freely in and out of the air-gapped, 3. The fixture for CNC machine tools with high positioning accuracy according to claim 2, characterized in that: It also includes guide plates, which are protruded on both sides of the upper end wall of the support plate, and both ends of the rear end wall of the inner support plate are respectively recessed with a guide groove, and the upper end parts of the guide plates are respectively slidably embedded in the guide grooves.

4. The fixture for CNC machine tools with high positioning accuracy according to claim 3 is characterized in that: The inner side wall of the upper end of the guide plate and the inner side wall of the upper end of the guide groove are both arranged in an inclined structure, and the inner side wall of the upper end of the guide plate and the inner side wall of the upper end of the guide groove can be slidably abutted.

5. The fixture for CNC machine tools with high positioning accuracy according to claim 1, characterized in that: It also includes a cylinder mounting plate, which is respectively arranged on the front end and one side of the support plate, and the first cylinder and the second cylinder are respectively detachably arranged on the cylinder mounting plate by bolts.

6. The fixture for CNC machine tools with high positioning accuracy according to claim 1, characterized in that: The side walls at both ends of the bottom plate are respectively concavely provided with a U-shaped hole.

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