CN113977319A

CN113977319A - Multifunctional clamp for milling machine

Info

Publication number: CN113977319A
Application number: CN202111351662.XA
Authority: CN
Inventors: 王强; 倪玉成
Original assignee: Jiangsu Yiquan Cnc Technology Co ltd
Current assignee: Jiangsu Yiquan Cnc Technology Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-01-28
Anticipated expiration: 2041-11-16
Also published as: CN113977319B

Abstract

The invention discloses a multifunctional clamp for a milling machine, which belongs to the technical field of workpiece processing and comprises a base and a movable support, wherein the movable support is connected with the base in a sliding way and comprises a support and a first rotating shaft, the sliding block comprises a second rotating shaft and an inverted T-shaped sliding block, a first through hole and a second through hole which penetrate through the side face are formed in two opposite side faces of two ends of the support, the first rotating shaft penetrates through the first through hole and is rotatably connected with the support, a trapezoidal first convex edge is uniformly arranged on the axial outer edge of the first rotating shaft, a movable clamping block is arranged on the first rotating shaft, a third through hole which penetrates through two ends of the movable clamping block and is matched with the first rotating shaft and a fourth notch with a trapezoidal cross section are formed in the movable clamping block, the movable clamping block is slidably connected with the first rotating shaft through the third through hole and rotates along with the first rotating shaft, a plurality of notches are formed in the movable clamping block, and therefore the clamping function of workpieces of different shapes is achieved.

Description

Multifunctional clamp for milling machine

Technical Field

The invention relates to the technical field of workpiece processing, in particular to a multifunctional clamp for a milling machine.

Background

The milling machine mainly refers to a machine tool for processing various surfaces of a workpiece by using a milling cutter. Typically the milling cutter is moved primarily in a rotary motion and the movement of the workpiece and the milling cutter is a feed motion. It can be used for processing plane, groove, various curved surfaces and gears.

When the milling machine works, a workpiece to be machined needs to be fixed on a workbench by using a clamp, in the prior art, the workpiece is clamped by adopting a flat tongs commonly used for clamping cubic workpieces, the function is single, the requirement for stable clamping cannot be met for workpieces with special shapes, and the clamp needs to be replaced generally.

Disclosure of Invention

In view of the technical defects, the invention aims to provide a multifunctional clamp for a milling machine, which can simultaneously realize cylindrical and square clamping and can be further used for clamping workpieces with notches.

In order to solve the technical problems, the invention adopts the following technical scheme: a multifunctional clamp for a milling machine comprises a base and a movable support, wherein the movable support is slidably connected with the base, the base comprises a first base and a second base, the second base is positioned on the upper portion of the first base and is fixedly connected with the first base, a plurality of inverted T-shaped second notches are formed in the second base, the second notches are parallel to the side face of the second base, and a screw rod is arranged inside the second notches; the movable support comprises a support, a first rotating shaft, a second rotating shaft and an inverted T-shaped sliding block, a first through hole and a second through hole which penetrate through the side faces are formed in two opposite side faces of two ends of the support, two ends of the first rotating shaft penetrate through the first through hole and are rotatably connected with the support, trapezoidal first convex ribs are uniformly arranged on the axial outer edge of the first rotating shaft, a movable clamping block is arranged on the first rotating shaft, a third through hole which penetrates through two ends of the movable clamping block and is matched with the first rotating shaft is formed in the movable clamping block, the movable clamping block is slidably connected with the first rotating shaft through the third through hole, and first cross-shaped through holes which penetrate through the first rotating shaft in the radial direction are further formed in two ends of the first rotating shaft; two ends of the second rotating shaft penetrate through the second through hole to be rotatably connected with the support, the second rotating shaft is parallel to the first rotating shaft, positive threads, negative threads and guide blocks are symmetrically arranged on the second rotating shaft, the guide blocks are meshed and connected with the second rotating shaft through the positive threads and the negative threads, and the guide blocks drive the movable clamping blocks to move; a plurality of inverted T-shaped sliding blocks are uniformly arranged at the bottom of the support and are connected with the lead screw in a meshed mode.

Preferably, the guide block is close to the side of going up of activity clamp splice and is equipped with the semi-arc groove, and the one end of guide block and the one end coincidence in semi-arc groove, the other end and the lateral wall butt of support are equipped with the curved second bead that the width is less than semi-arc groove width on the semi-arc groove, and the guide block passes through the second bead and drives the removal of activity clamp splice.

Preferably, the movable clamping blocks comprise a first movable clamping block and a second movable clamping block which are dumbbell-shaped; first activity clamp splice both ends structure asymmetry, one end are the cuboid that the cross-section is the square, are equipped with short arc wall, triangle-shaped on the three side of the other end respectively and fall mouthful and L type third notch, second activity clamp splice both ends structure symmetry is equipped with ridge form bead on the three side respectively, trapezoidal bead, the fifth notch of L type, the equal middle section of first activity clamp splice and second activity clamp splice all be equipped with second bead complex linkage segment.

Preferably, a fixed block is arranged at one end of the second base, a rectangular clamping groove matched with the support is formed in the side face, close to the support, of the fixed block, and semicircular second clamping grooves are symmetrically formed in two ends of the rectangular clamping groove.

Preferably, a fourth clamping groove is formed in one end of the second rotating shaft, and a sleeve is sleeved at the butt joint of the positive thread and the negative thread.

Preferably, semicircular third clamping grooves matched with the second clamping grooves are formed in the side walls of the two ends of the support.

Preferably, the support still includes first jack catch and locking cap, first jack catch encircles first pivot and locates inside the first through-hole, the locking cap is close to and is equipped with the second jack catch that matches with first jack catch on the side of support, radially is equipped with the second cross-shaped through-hole that matches with the first cross-shaped through-hole on the first pivot.

Preferably, the multifunctional clamp for the milling machine further comprises a fixing rod for fixing the relative position of the support and the fixing block, the fixing rod comprises a rod body and a rod cap, the arc of the cross section of the fixing rod is an arc, the cross section of the rod cap is circular, and a window which is consistent with the shape and the position of the rod body is arranged on the rod cap.

Preferably, the side surface of the bottom of the support is provided with a mounting groove which can be connected with a milling machine chip baffle.

Preferably, a plurality of first notches are uniformly formed in the periphery of the first base.

The invention has the beneficial effects that: the invention adopts the scheme that the movable clamping block is adopted, and different notches are formed in different side surfaces of the clamping block, so that the clamping of workpieces which are cylindrical, have notches, special shapes and the like and have different shapes can be realized simultaneously on the basis of clamping a square workpiece, the same clamp has multiple functions, and the frequent replacement of the clamp in the machining process is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic overall structural diagram of a multifunctional fixture for a milling machine according to an embodiment of the present invention.

FIG. 2 is a schematic view of a base structure of a multifunctional clamp for a milling machine according to an embodiment of the present invention

Fig. 3 is a schematic view of a first rotating shaft structure of a multifunctional clamp for a milling machine according to an embodiment of the present invention.

Fig. 4 is a schematic view of a movable support part structure (with movable clamping blocks removed) of a multifunctional clamp for a milling machine according to an embodiment of the invention.

Fig. 5 is a schematic structural diagram of a first movable clamping block of a multifunctional clamp for a milling machine according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a first movable clamping block of a multifunctional clamp for a milling machine according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a fixing rod of the multifunctional clamp for a milling machine according to an embodiment of the present invention.

Description of reference numerals: a first base 101; a second base 102; a first notch 103; a fixed block 104; a second notch 106; a screw rod 107; a second card slot 108; a support 201; a third card slot 202; a first rotating shaft 203; a first rib 204; a first cross-shaped through-hole 205; a first movable clamp block 206; a second movable clamp block 207; a first jaw 208; a second rotating shaft 209; a mounting groove 210; a guide block 211; a second rib 212; a slider 213; a fourth through-hole 214; a short arcuate slot 215; a triangular inverted notch 216; a third slot 217; a third through hole 218; a fourth notch 219; a connecting section 220; ridge-like ridges 222; trapezoidal ribs 223; a fifth notch 224; a sleeve 225; a fixing cap 301; a second cross-shaped via 302; a second jaw 303; a fixing rod 304; a rotating device 305; a stem cap 306; a rod 307.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): as shown in fig. 1 to 7, the present invention provides a multifunctional clamp for a milling machine, including a base and a movable support, wherein the movable support is slidably connected with the base, the movable support movably changes the size of an opening of the clamp on the base, the base includes a first base 101 and a second base 102, the first base 101 is used for being fixedly connected with a milling machine workbench, the second base 102 is located on the upper portion of the first base 101 and is fixedly connected with the first base 101, the movable support is arranged on the second base 102, the second base 102 is provided with a plurality of inverted T-shaped second notches 106, the second notches 106 are parallel to the side surface of the second base 102, and a screw 107 is arranged inside the second notches 106; the cradle comprises a cradle 201, a first rotation axis 203, a second rotating shaft 209 and a reverse T-shaped sliding block 213, two opposite side surfaces of two ends of the support 201 are provided with a first through hole and a second through hole which penetrate through the side surfaces, two ends of the first rotating shaft 203 penetrate through the first through hole to be rotatably connected with the support 201, the axial outer edge of the first rotating shaft 203 is uniformly provided with a trapezoidal first convex rib 204, the first rotating shaft 203 is provided with a movable clamping block, the movable clamping block is internally provided with a third through hole 218 which penetrates through two ends of the movable clamping block and is matched with the first rotating shaft 203, the movable clamping block is slidably connected with the first rotating shaft 203 through the third through hole 218, the outer edge of the third through hole 218 is uniformly provided with a fourth notch 219 with a trapezoidal cross section, the first convex rib 204 is clamped with the fourth notch 219, the movable clamping block is limited to only slide in the axial direction of the first rotating shaft 203, the relative position of the movable clamping block and the first rotating shaft 203 is limited, and the movable clamping block can only rotate along with the rotation of the first rotating shaft 203. When the first rotating shaft 203 rotates for a certain angle, the movable clamping blocks rotate for a corresponding angle, when the first rotating shaft 203 is fixed, the movable clamping blocks are fixed at the same time, the two ends of the first rotating shaft 203 are also provided with first cross-shaped through holes 205 penetrating through the first rotating shaft 203 in the radial direction, the first cross-shaped through holes 205 are used for limiting the rotating state of the first rotating shaft 203, and when a fixed rod 305 penetrates through the first cross-shaped through holes 205 to connect the two ends of the first rotating shaft 203 with other devices such as a fixed cap 301, the first rotating shaft 203 is fixed in a non-rotating state; the second rotating shaft 209 penetrates through the second through hole to be rotatably connected with the support 201, the second rotating shaft 209 is parallel to the first rotating shaft 203, the second rotating shaft 209 is symmetrically provided with a positive thread, a negative thread and a guide block 211, the guide block 211 is meshed and connected with the second rotating shaft 209 through the positive thread and the negative thread, the second rotating shaft 209 rotates, the guide block 211 axially moves towards the opposite direction or the opposite direction along the second rotating shaft 209, and the guide block 211 drives the movable clamping block to move so that the movable clamping block axially moves towards the opposite direction or the opposite direction along the first rotating shaft 203; the bottom of the support 201 is uniformly provided with a plurality of inverted T-shaped sliding blocks 213, the sliding blocks 213 are meshed with the screw rod 107, and the screw rod 107 rotates to drive the support 201 to move so as to change the size of the opening of the clamp.

Further, the upper side face of the guide block 211 close to the movable clamping block is provided with a semi-arc groove, the curvature radius of the semi-arc groove is consistent with the maximum radius defined by the rotation track of the movable clamping block, so that the movable clamping block can rotate freely when the guide block 211 is static, one end of the guide block 211 coincides with one end of the semi-arc groove, the other end of the guide block abuts against the side wall of the support 201, the guide block 211 is limited from rotating relative to the support, the arc-shaped groove is provided with an arc-shaped second convex rib 212 with the width smaller than the width of the semi-arc groove, and the guide block 211 drives the movable clamping block to move through the second convex rib 212.

Further, the movable clamping blocks include a first movable clamping block 206 and a second movable clamping block 207 which are dumbbell-shaped; the two ends of the first movable clamping block 206 are asymmetric in structure, one end of the first movable clamping block is a cuboid 221 with a square cross section, the shape of the cuboid 211 is consistent with that of a flat tongs clamp in the prior art, the clamping of the most basic hexahedral workpiece is met, three side faces of the other end of the first movable clamping block are respectively provided with a short arc-shaped groove 215 for clamping a cylindrical workpiece, a triangular inverted opening 216 for clamping a cylindrical workpiece or a special-shaped workpiece with a small clamping volume, and an L-shaped third groove 217 for clamping a polyhedral workpiece; the second activity clamp splice 207 both ends structure symmetry, be equipped with ridge form bead 222 on the three side respectively, second activity clamp splice 207 uses in pairs, frictional force when ridge form bead 222 increases the centre gripping, perhaps second activity clamp splice 207 uses with the cooperation of first activity clamp splice 206, the cylindrical or special-shaped work piece of centre gripping, the fifth notch 224 of trapezoidal bead 223 and L type, the work piece of notch is seted up to the centre gripping, the bead on the activity clamp splice cooperates with the notch of work piece, stabilize the centre gripping, first activity clamp splice 206 and the equal middle section of second activity clamp splice 207 all are equipped with second bead 212 complex linkage segment 220.

Further, one end of the second base 102 is provided with a fixed block 104, the fixed block 104 fixes the position of a movable support on the second support 102, the other movable support wants to slide back and forth relative to the fixed block, a rectangular clamping groove matched with the support 201 is arranged on the side surface of the fixed block 104 close to the support 201, and semicircular second clamping grooves 108 are symmetrically arranged at two ends of the rectangular clamping groove.

Furthermore, a fourth clamping groove is formed in one end of the second rotating shaft 209, and the fourth clamping groove is connected with the external rotating device 305, so that the second rotating shaft 209 can rotate more easily; the abutting joint of the positive thread and the negative thread is sleeved with a sleeve 225, and the sleeve 225 prevents the guide block 211 from being disengaged from the positive thread and the negative thread when being rotated.

Furthermore, the side walls of the two ends of the support 201 are provided with semicircular third clamping grooves 202 matched with the second clamping grooves 108, and the second clamping grooves 108 and the third clamping grooves 202 are matched to form a complete circle.

Further, the support 201 further comprises a first claw 208 and a fixing cap 301, the first claw 201 is arranged in the first through hole around the first rotating shaft 203, a second claw 303 matched with the first claw 208 is arranged on the side surface, close to the support 201, of the fixing cap 301, the first claw 208 is clamped with the second claw 303 to limit the position of the fixing cap 301, a second cross-shaped through hole 302 matched with the first cross-shaped through hole 205 in the first rotating shaft 203 is radially arranged on the fixing cap 301, and the rod body of the fixing rod 304 penetrates through the first cross-shaped through hole 205 and the second cross-shaped through hole 302 to limit the rotating state of the first rotating shaft 203.

Further, the multifunctional fixture for the milling machine further comprises a fixing rod 304 for fixing the relative position of the support 201 and the fixing block 104, the fixing rod 304 comprises a rod body 307 and a rod cap 306, the arc of the cross section of the fixing rod 307 is a major arc, the major arc fixing rod 307 prevents the fixing rod 307 from being pulled out when the fixing rod 307 is deformed under stress, the fixing rod 307 fixes the fixing block 104 and the support 201, the cross section of the rod cap 306 is circular, and a window which is consistent with the shape and the position of the rod body 307 is arranged on the rod cap 306, so that whether the fixing block 104 and the support 201 are fixed by the rod body 307 can be conveniently observed.

Further, the side surface of the bottom of the support 201 is provided with a mounting groove 210 which can be connected with a milling machine chip blocking plate, and the milling machine chip blocking plate prevents chips from entering the second notch 306 to damage the clamp when milling work is carried out.

Further, a plurality of first notches 103 are uniformly formed in the periphery of the first base 101, and the first notches 103 are used for being fixedly connected with a milling machine workbench.

When in use, a proper movable clamping block is selected according to the shape of a workpiece, here, taking a special-shaped workpiece with a triangular protrusion as an example, two first movable clamping blocks 206 are selected to be sleeved on a first rotating shaft 203, two first movable clamping blocks 206 are selected to be sleeved on the first rotating shaft 203 of another support 201 fixed with a fixed block 104, a second rotating shaft 209 is rotated to enable a guide block 211 to move relatively, the movable clamping blocks on the same first rotating shaft 203 are driven to move oppositely to a proper distance, a screw rod 107 is rotated to enable the support 201 to slide, a clamp is opened, one side of the workpiece with the triangular protrusion is abutted against one side surface of a clamping section of a cuboid 221 of the first movable clamping block 206, two sides of a vertex angle of the triangular protrusion on the workpiece are abutted against inclined surfaces of triangular inverted openings 216 on the first movable clamping blocks 206 respectively, the screw rod 107 is rotated to enable the support 201 to slide, the clamp is tightened to clamp the triangular workpiece, the fixing cap 301 is installed on the first through hole, the fixing rod 304 and the fixing cap 301 limit the first rotating shaft 203 to not rotate any more, and clamping of the workpiece is completed.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A multifunctional clamp for a milling machine comprises a base and a movable support, wherein the movable support is slidably connected with the base, and the multifunctional clamp is characterized in that the base comprises a first base (101) and a second base (102), the second base (102) is positioned at the upper part of the first base (101) and is fixedly connected with the first base (101), a plurality of inverted T-shaped second notches (106) are formed in the second base (102), the second notches (106) are parallel to the side surface of the second base (102), and a screw rod (107) is arranged in each notch; the movable support comprises a support (201), a first rotating shaft (203), a second rotating shaft (209) and an inverted T-shaped sliding block (213), wherein a first through hole and a second through hole penetrating through the side faces are formed in two opposite side faces of two ends of the support (201), two ends of the first rotating shaft (203) penetrate through the first through hole and are rotatably connected with the support (201), trapezoidal first protruding ribs (204) are uniformly arranged on the axial outer edge of the first rotating shaft (203), a movable clamping block is arranged on the first rotating shaft (205), a third through hole (218) which penetrates through two ends of the movable clamping block and is matched with the first rotating shaft (203) is formed in the movable clamping block, the movable clamping block is slidably connected with the first rotating shaft (203) through the third through hole (218), and a first cross-shaped through hole (205) which penetrates through the first rotating shaft (203) in the radial direction is further formed in two ends of the first rotating shaft (203); two ends of the second rotating shaft (209) penetrate through the second through hole and are rotatably connected with the support (201), the second rotating shaft (209) is parallel to the first rotating shaft (203), the second rotating shaft (209) is symmetrically provided with a positive thread, a negative thread and a guide block (211), the guide block (211) is meshed and connected with the second rotating shaft (209) through the positive thread and the negative thread, and the guide block (211) drives the movable clamping block to move; the bottom of the support (201) is uniformly provided with a plurality of inverted T-shaped sliding blocks (213), and the sliding blocks (213) are meshed and connected with the screw rod (107).

2. The multifunctional clamp for the milling machine according to claim 1, characterized in that the upper side of the guide block (211) close to the movable clamping block is provided with a semi-arc groove, one end of the guide block (211) coincides with one end of the semi-arc groove, the other end abuts against the side wall of the support (201), the semi-arc groove is provided with a second convex rib (212) with a width smaller than the width of the semi-arc groove, and the guide block (211) drives the movable clamping block to move through the second convex rib (212).

3. The multifunctional jig for milling machine according to claim 2, wherein the movable clamp blocks comprise a first movable clamp block (206) and a second movable clamp block (207) of a dumbbell type; first activity clamp splice (206) both ends structure asymmetry, one end are cuboid (221) that the cross-section is the square, are equipped with short arc wall (215), triangle-shaped on the three side of the other end respectively and fall mouthful (216) and L type third notch (217), second activity clamp splice (207) both ends structure symmetry is equipped with ridge form bead (222) on the three side respectively, trapezoidal bead (223), fifth notch (224) of L type, first activity clamp splice (206) and second activity clamp splice (207) equal middle section all be equipped with second bead (212) complex linkage segment (220).

4. The multifunctional clamp for the milling machine as claimed in claim 1, wherein a fixed block (104) is arranged at one end of the second base (102), a rectangular clamping groove matched with the support (201) is arranged on the side surface of the fixed block (104) close to the support (201), and semicircular second clamping grooves (108) are symmetrically arranged at two ends of the rectangular clamping groove.

5. The multifunctional clamp for the milling machine according to claim 1, wherein one end of the second rotating shaft (209) is provided with a fourth clamping groove, and a sleeve (225) is sleeved at the butt joint of the positive thread and the negative thread.

6. The multifunctional clamp for the milling machine according to claim 4, characterized in that the side walls of the two ends of the support (201) are provided with semicircular third clamping grooves (202) matched with the second clamping grooves (108).

7. A multifunctional clamp for a milling machine as claimed in claim 5, characterized in that the support (201) further comprises a first jaw (208) and a fixing cap (301), the first jaw (208) is arranged inside the first through hole around the first rotating shaft (203), a second jaw (303) matched with the first jaw (208) is arranged on the side surface of the fixing cap (301) close to the support (201), and a second cross-shaped through hole (302) matched with the first cross-shaped through hole (205) on the first rotating shaft (203) is radially arranged.

8. The multifunctional clamp for the milling machine as claimed in claim 7, further comprising a fixing rod (304) for fixing the relative position of the support (201) and the fixing block (104), wherein the fixing rod (304) comprises a rod body (307) and a rod cap (306), the circular arc of the cross section of the fixing rod (307) is a major arc, the cross section of the rod cap (306) is a circle, and the rod cap (306) is provided with a window which is consistent with the shape and the position of the rod body (307).

9. A multifunctional jig for a milling machine according to claim 1, wherein the side of the bottom of the support (201) is provided with a mounting groove (210) to which a milling machine chip guard can be attached.

10. The multifunctional jig for a milling machine according to claim 1, wherein a plurality of first notches (103) are uniformly formed around the first base (101).