High-precision milling machine fixture

Abstract

The utility model discloses a high-precision milling machine fixture, which comprises a bottom plate, a sliding plate, clamping blocks, a base plate, an eccentric positioning block and a feeler block, a first support plate is convexly arranged on the upper end wall of the bottom plate, the sliding plate is slidably arranged on the upper end wall of the bottom plate, the clamping blocks are respectively and detachably arranged on the inner side walls of the first support plate and the sliding plate, and the base plate is arranged on the first support plate. The clamping blocks abut against the two side walls of a to-be-machined workpiece respectively, the base plates are detachably arranged on the upper end wall of the bottom plate through screws respectively and abut against the lower bottom wall of the to-be-machined workpiece, the eccentric positioning block is rotatably arranged on the upper end wall of the bottom plate, and the peripheral wall of the eccentric positioning block abuts against the end wall of the to-be-machined workpiece. The feeler block is arranged at the end, close to the eccentric positioning block, of the upper end of the first supporting plate. According to the technical scheme, clamping force and stability can be improved, the machining and positioning precision can be effectively guaranteed by flexibly adjusting the position of the eccentric positioning block, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to machining technical field especially relates to a high accuracy milling machine fixture. BACKGROUND

[0002] Milling machine fixture is mainly used for processing plane, recess, spline and various profile on workpiece, and is one of the most commonly used fixtures. It is mainly composed of positioning device, clamping device, fixture body, connecting element and tool setting element. During milling, the cutting force is large, and it is intermittent cutting with large vibration. Therefore, the clamping force of milling machine fixture is required to be large, and the rigidity and strength of the fixture are required to be high.

[0003] However, in the process of clamping workpiece by the existing milling machine fixture, the workpiece is prone to loose clamping defect, which affects the machining accuracy of the workpiece. Therefore, the high-precision milling machine fixture is proposed to improve the machining accuracy of the workpiece. CONTENT OF THE UTILITY MODEL

[0004] The utility model mainly aims at providing a high-precision milling machine fixture, which aims to solve the technical problem that the existing milling machine fixture is prone to loose clamping defect in the process of clamping workpiece, which affects the machining accuracy of the workpiece.

[0005] To achieve the above-mentioned purpose, the high-precision milling machine fixture provided by the utility model comprises a bottom plate, a sliding plate, clamping blocks, a backing plate, an eccentric positioning block and a tool setting block. One end of the upper end wall of the bottom plate is provided with a first support plate. The sliding plate is slidably arranged on the upper end wall of the bottom plate. The clamping blocks are respectively detachably arranged on the inner side walls of the first support plate and the sliding plate. The clamping blocks respectively abut against the two side walls of the workpiece to be machined. The backing plate is detachably arranged on the upper end wall of the bottom plate by screws. The backing plate abuts against the lower bottom wall of the workpiece to be machined. The eccentric positioning block is rotatably arranged on one side of the upper end wall of the bottom plate. The eccentric positioning block has a cylindrical structure. The outer peripheral wall of the eccentric positioning block abuts against the end wall of the workpiece to be machined. The tool setting block is arranged on the upper end of the first support plate close to one end of the eccentric positioning block.

[0006] Optionally, it further comprises a screw rod, a nut and a hand wheel. The other end of the upper end wall of the bottom plate is provided with a second support plate. The nut is embedded on the second support plate. The screw rod is threadedly connected with the nut. The front end of the screw rod is rotatably connected with the rear end wall of the sliding plate. The hand wheel is arranged on the rear end of the screw rod.

[0007] Optionally, the outer peripheral wall of the hand wheel is recessed with a plurality of through holes.

[0008] Optionally, a slide rod is arranged on the lower end wall of the bottom plate, and the slide plate is in sliding connection with the slide rod.

[0009] Optionally, a first fastening screw is arranged, a limiting step is arranged on the lower end of the inner side wall of the first support plate and the inner side wall of the slide block, the lower end wall of the clamping block is in abutment with the limiting step, the clamping block is recessed with a plurality of screw holes, the inner side wall of the first support plate and the inner side wall of the slide block are recessed with a plurality of first threaded holes, and the first fastening screw is arranged in the screw hole and screwed in the first threaded hole.

[0010] Optionally, a second fastening screw is arranged, the upper end of the eccentric positioning block is provided with a countersunk hole, the upper end wall of the bottom plate is recessed with a second threaded hole, and the second fastening screw is arranged in the countersunk hole and screwed in the second threaded hole.

[0011] Optionally, the outer side wall of the clamping block is recessed with a plurality of grooves.

[0012] Optionally, the two ends of the bottom plate are provided with a plurality of U-shaped grooves.

[0013] The technical scheme of the utility model has the following beneficial effects: the utility model discloses the technical scheme, through the first support plate of the upper end wall of the bottom plate, the slide plate can be slidably arranged on the upper end wall of the bottom plate, the clamping block is respectively detachably arranged on the inner side wall of the first support plate and the slide plate, the clamping block is respectively in abutment with the two side walls of the workpiece to be processed, the spacer plate is detachably arranged on the upper end wall of the bottom plate through the screw, the spacer plate is in abutment with the lower bottom wall of the workpiece to be processed, the eccentric positioning block is rotatably arranged on one side of the upper end wall of the bottom plate, the eccentric positioning block is in the shape of a cylindrical body structure, the outer peripheral wall of the eccentric positioning block is in abutment with the end wall of the workpiece to be processed, the tool setting block is arranged on the upper end of the first support plate close to the eccentric positioning block, the eccentric positioning block can be flexibly adjusted to the positioning position, the positioning precision of the workpiece is improved, the machining precision is guaranteed, the design of the groove on the surface of the clamping block can effectively increase the contact area of the clamp and the workpiece, thereby improving the clamping force, the design of the groove on the surface of the clamping block can provide certain buffer and protection when clamping, reduce the damage to the surface of the workpiece, thereby avoiding the phenomenon that the workpiece is not clamped tightly and the surface of the workpiece is damaged, and the utility model has high practicability. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the structure shown in these drawings without creative labor.

[0015] Fig. 1 It is an overall structure schematic view of a high-precision milling machine clamp of an embodiment of the utility model;

[0016] Fig. 2 It is an overall structure schematic view of a high-precision milling machine clamp of an embodiment of the utility model from another perspective;

[0017] Fig. 3 It is an exploded structure schematic view of a high-precision milling machine clamp of an embodiment of the utility model;

[0018] Fig. 4 It is a schematic view of a high-precision milling machine clamp of an embodiment of the utility model in a clamped state of a workpiece to be processed.

[0019] The utility model discloses the realization, functional characteristics and advantages will be further described with reference to the embodiment, with reference to the drawings. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directionality indications also change accordingly.

[0022] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skill in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the utility model.

[0023] The utility model provides a kind of high-precision milling machine clamp.

[0024] As Figs. 1 to 4As shown in the utility model one embodiment, this high precision milling machine fixture, including bottom plate 101, sliding plate 102, clamping block 103, backing plate 104, eccentric positioning block 105 and tool setting block 106, the upper end wall of bottom plate 101 one end protrudes a first support plate 1011, sliding plate 102 can be slidably set on the upper end wall of bottom plate 101, clamping block 103 respectively detachably set on the inner side wall of first support plate 1011 and sliding plate 102, clamping block 103 respectively with the two side walls of the workpiece 200 to be processed abuts, backing plate 104 is detachably set on the upper end wall of bottom plate 101 respectively by screw, backing plate 104 and the lower bottom wall of the workpiece 200 to be processed abuts, eccentric positioning block 105 is rotatably set on the upper end wall of bottom plate 101 one side, the outer shape of eccentric positioning block 105 is cylindrical structure setting, the outer peripheral wall of eccentric positioning block 105 and the end wall of the workpiece 200 to be processed abuts, tool setting block 106 is set on the upper end of first support plate 1011 near eccentric positioning block 105 one end.

[0025] Specifically, it also includes screw 107, nut 108 and hand wheel 109, the upper end wall of bottom plate 101 the other end protrudes a second support plate 1012, nut 108 is embedded on the second support plate 1012, screw 107 is threadedly connected with nut 108, the front end of screw 107 is rotatably connected with the rear end wall of sliding plate 102, hand wheel 109 is set on the rear end of screw 107, and the clamping block can be clamped to the workpiece to be processed by rotating the screw.

[0026] Specifically, the outer peripheral wall of hand wheel 109 is recessed with a plurality of through holes 1091, which facilitates the rotation of the hand wheel by tools and improves the clamping force.

[0027] Specifically, it also includes slide rod 110, which is set on the lower end wall of bottom plate 101, and sliding plate 102 is slidably connected with slide rod 110, which limits the sliding plate and avoids the skewing of the sliding plate.

[0028] Specifically, it also includes first fastening screw 111, the inner side wall of first support plate 1011 and the inner side wall of sliding block 102 are protruded with a limiting step 112 at the lower end, the lower end wall of clamping block 103 abuts with limiting step 112, clamping block 103 is recessed with a plurality of screw holes 1031, the inner side wall of first support plate 1011 and the inner side wall of sliding block 102 are recessed with a plurality of first threaded holes 113, first fastening screw 111 is respectively threaded in screw hole 1031 and screwed in first threaded hole 113, so that the installation and disassembly of clamping block are more convenient and fast.

[0029] Specifically, the upper end of the eccentric positioning block 105 is provided with a countersunk hole 1051, the upper end wall of the bottom plate 101 is concavely provided with a second threaded hole 1013, and the second fastening screw 114 is arranged in the countersunk hole 1051 and screwed in the second threaded hole 1013, so that the eccentric positioning block can be flexibly adjusted in position, the positioning accuracy of the workpiece is improved, and therefore the machining accuracy is ensured.

[0030] Specifically, the outer side wall of the clamping block 103 is concavely provided with a plurality of grooves 1032, the design of the grooves can improve the clamping force and stability, can make the clamping block produce a certain curved deformation when clamping the workpiece, thereby forming a shape that is closely combined with the surface of the workpiece, can provide more elasticity when clamping, increase the clamping force, and make the workpiece more firmly fixed on the clamp, the grooves can increase the contact area of the clamp and the workpiece, thereby improving the clamping force, the design of the grooves can increase the contact points of the clamp and the workpiece, thereby enhancing the stability of the clamp; meanwhile, the surface of the workpiece can be protected, and the design without the grooves can cause the clamping force to directly act on the surface of the workpiece, which can scratch, indent or clamp the surface of the workpiece, thereby affecting the quality and appearance of the workpiece. The design of the grooves can provide a certain buffer and protection when clamping, thereby reducing damage to the surface of the workpiece.

[0031] Specifically, the two ends of the bottom plate 101 are provided with a plurality of U-shaped grooves 1014, so that the bottom plate 101 can be conveniently installed and fixed.

[0032] Specifically, the working principle and process of the utility model are as follows:

[0033] The utility model discloses through eccentric positioning block can flexibly adjust the positioning position, improve the positioning accuracy of workpiece, thereby guarantee the machining accuracy, the design of the surface groove of clamping block can effectively increase the contact area of clamp and workpiece, thereby improve the clamping force, the design of the surface groove of clamping block can provide a certain buffer and protection when clamping, thereby reducing damage to the surface of the workpiece, so that the workpiece can be clamped tightly and the phenomenon of damaging the surface of the workpiece can be avoided, and the utility is strong.

[0034] The above-mentioned is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and the drawings contents or directly / indirectly applied in other related technical fields under the utility model concept of the utility model is included in the patent protection range of the utility model.

Claims

1. A high-precision milling machine jig, characterized by, The utility model provides a workpiece clamping device, including bottom plate, sliding plate, clamping block, backing plate, eccentric positioning block and tool setting block, one end of the upper end wall of bottom plate is provided with a first support plate, the sliding plate is slidably arranged on the upper end wall of bottom plate, the clamping block is respectively detachably arranged on the inner side wall of first support plate and sliding plate, the clamping block is respectively with the both side walls of the workpiece to be processed and is in contact, the backing plate is respectively detachably arranged on the upper end wall of bottom plate through screw, and the backing plate is in contact with the lower bottom wall of the workpiece to be processed, the eccentric positioning block is rotatably arranged on one side of the upper end wall of bottom plate, the eccentric positioning block is provided with the cylindrical structure, the outer peripheral wall of eccentric positioning block is in contact with the end wall of the workpiece to be processed, and the tool setting block is arranged on the upper end of first support plate and is close to one end of eccentric positioning block.

2. The high precision milling machine fixture of claim 1, wherein, Also including screw rod, nut and hand wheel, the other end of the upper end wall of bottom plate is provided with a second support plate, the nut is embedded on the second support plate, the screw rod is in threaded connection with the nut, the front end of screw rod is rotatably connected with the rear end wall of sliding plate, and the hand wheel is arranged on the rear end of screw rod.

3. The high precision milling machine fixture of claim 2, wherein, The outer peripheral wall of hand wheel is recessed with a plurality of through holes.

4. The high precision milling machine fixture of claim 1, wherein, Also including slide rod, the slide rod is arranged on the lower end wall of bottom plate, and the sliding plate is slidably connected with the slide rod.

5. The high precision milling machine fixture of claim 1, wherein, Also including first fastening screw, the inner side wall of first support plate and the inner side wall of sliding block are provided with a limiting step at the lower end, the lower end wall of clamping block is in contact with the limiting step, the clamping block is recessed with a plurality of screw holes, the inner side wall of first support plate and the inner side wall of sliding block are recessed with a plurality of first threaded holes, and the first fastening screw is respectively threaded in the screw hole and screwed in the first threaded hole.

6. The high precision milling machine fixture of claim 1, wherein, Also including second fastening screw, the upper end of eccentric positioning block is provided with a countersunk hole, the upper end wall of bottom plate is recessed with a second threaded hole, the second fastening screw is threaded in the countersunk hole and screwed in the second threaded hole.

7. The high precision milling machine fixture of claim 1, wherein, The outer side wall of clamping block is recessed with a plurality of grooves.

8. The high precision milling machine fixture of claim 1, wherein, The both ends of bottom plate are provided with a plurality of U-shaped grooves.

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