CN214444790U

CN214444790U - Machining clamp

Info

Publication number: CN214444790U
Application number: CN202120602901.3U
Authority: CN
Inventors: 胡文琪; 邵良
Original assignee: Shanghai Jingyue Machinery Co ltd
Current assignee: Shanghai Jingyue Machinery Co ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-10-22
Anticipated expiration: 2031-03-24

Abstract

The application relates to the technical field of fixed fixtures, in particular to a processing fixture, which comprises a base, wherein at least four positioning seats are fixedly arranged on the top surface of the base, the sequential connecting lines of all the positioning seats jointly form a quadrangle, side face bolts, deviating from each other, of the positioning seats are fixedly connected with a lateral positioning assembly used for positioning a workpiece from the width direction, at least two groups of vertical pressing assemblies are arranged on the top surface of the base, each vertical pressing assembly comprises a screw rod, a limiting rod and a pressing square rod, the limiting rod is fixedly connected with the base, the top end of the limiting rod penetrates through the pressing square rod and is in rotating sliding fit with the pressing square rod, the pressing square rod is used for pressing the workpiece, the screw rod penetrates through the pressing square rod and is in sliding fit with the pressing square rod, a pressing nut used for pressing the pressing square rod is in threaded fit with the top end of the screw rod, the screw rod is in clamping and sliding fit with the base, and the screw rod slides around the central line of the limiting rod, the clamp can position and clamp workpieces with different widths and thicknesses, and improves machining efficiency.

Description

Machining clamp

Technical Field

The application relates to the technical field of fixing fixtures, in particular to a machining fixture.

Background

The jig is a device for fixing a processing object to occupy a correct position for receiving construction or inspection in a machine manufacturing process, and is also called a jig. In a broad sense, any device used to quickly, conveniently and safely mount a workpiece at any stage in a process may be referred to as a jig.

The fixture generally comprises a positioning element (for determining the correct position of a workpiece in the fixture), a clamping device, a tool setting guide element (for determining the relative position of the tool and the workpiece or guiding the direction of the tool), an indexing device (for enabling the workpiece to complete the processing of a plurality of stations in one-time installation, including a rotary indexing device and a linear movement indexing device), a connecting element, a fixture body (a fixture base), and the like.

The CT machine in the hospital comprises an opposite sex moving part, the moving part mainly comprises a bottom plate and approximately triangular rotating supporting ribs, the structure of the moving part is complex, and the processing period is long.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the related clamp is difficult to position, clamp and fix complex workpieces with different widths and thicknesses, and the machining efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

In order to make anchor clamps can fix a position the complicated work piece that the width is different, the thickness is different and press from both sides tight fixed, improve machining efficiency, this application provides a machining clamp.

The application provides a processing anchor clamps adopts following technical scheme: a processing clamp comprises a base, wherein at least four positioning seats are fixedly arranged on the top surface of the base, the sequential connecting lines of all the positioning seats form a quadrangle together, the side surfaces of the positioning seats, which are deviated from each other, are fixedly connected with lateral positioning assemblies used for positioning a workpiece from the width direction through bolts, at least two groups of vertical pressing assemblies are arranged on the top surface of the base, the vertical pressing assemblies are far away from each other and comprise screw rods, the limiting rod and compress tightly the square pole, limiting rod and base rigid coupling, the top of limiting rod run through compress tightly the square pole and with compress tightly the square pole and rotate sliding fit, compress tightly the square pole and be used for compressing tightly the work piece, the screw rod runs through compress tightly the square pole and compress tightly square pole sliding fit, the top screw-thread fit of screw rod has the gland nut who is used for compressing tightly the square pole, screw rod and base joint and sliding fit, the screw rod can use the vertical projection of limiting rod central line to slide as the centre of a circle.

By adopting the technical scheme, before a workpiece is placed, the pressing square rod rotates around the limiting rod to be a placing avoiding position of the workpiece, the pressing square rod can drive the screw rod to rotate around the limiting rod, the workpiece is placed on the top surface of the positioning seat, all the positioning seats support the workpiece together, the workpiece is positioned and clamped from the width direction of the workpiece by using the lateral positioning assembly, and the lateral positioning assembly can position and clamp workpieces with different widths; the pressing square rod rotates around the limiting rod reversely to the upper side of the workpiece, the pressing nut is screwed up, the pressing nut is matched with the screw rod to enable the pressing square rod to press the workpiece, the workpiece is positioned and clamped tightly, the vertical pressing assembly can clamp workpieces with different thicknesses tightly, the whole machining clamp can position, clamp and fix complex workpieces with different widths and different thicknesses, and machining efficiency is improved.

Optionally, the arc wall that uses the vertical projection of the central line of gag lever post as the centre of a circle is seted up to the base, and the draw-in groove has been seted up jointly to the inner wall of arc wall, and the one end that compresses tightly the square bar is kept away from to the screw rod is located the arc wall, and the one end that compresses tightly the square bar is kept away from to the screw rod has set firmly the chuck, and the chuck is located the draw-in groove, and the size of chuck is greater than the opening size of arc wall, and the diameter of screw rod is less than the opening size of arc wall, compresses tightly the square bar and has seted up long waist type hole, and the screw rod runs through long waist type hole and with long waist type hole sliding fit.

Through adopting above-mentioned technical scheme, the draw-in groove passes through the chuck with the screw rod restriction in the arc wall, when compressing tightly the square pole and rotate around the gag lever post, compresses tightly the square pole and drives the screw rod and remove in the arc wall, owing to compress tightly the square pole and seted up long waist type hole, the screw rod can realize adjusting screw and the different relative position relation of square pole that compresses tightly in long waist type downthehole removal, can adapt to the different length of work piece, and is easy and simple to handle.

Optionally, the screw rod sleeve is provided with a top spring, one end of the top spring is abutted against and matched with the pressing square rod, and the other end of the top spring is abutted against and matched with the base.

Through adopting above-mentioned technical scheme, work piece processing back that finishes, at the in-process of unscrewing gland nut, the top spring can automatic top tightly compress tightly the square pole and make and compress tightly the square pole and break away from the work piece automatically for disassemble the speed of taking out the work piece from the machining jig.

Optionally, the pressing square rod is fixedly provided with a first protection pad on the bottom surface facing the base.

Through adopting above-mentioned technical scheme, first protection pad can avoid compressing tightly square pole direct contact work piece, protects the work piece.

Optionally, the lateral positioning assembly includes a lateral adjusting block, a positioning block and a pressure spring, the bolt fixedly connects the lateral adjusting block with the positioning seat, and the pressure spring is located between the positioning block and the lateral adjusting block to enable the positioning block to abut against the workpiece.

Through adopting above-mentioned technical scheme, the bolt is adjusted the side direction fast with positioning seat fixed connection back, and the side direction regulating block makes the locating piece support tight work piece through the pressure spring, and the pressure spring receives pressure, and all side direction locating component press from both sides tight location to the work piece from the width direction jointly, and the setting of pressure spring can make the side direction locating component fix a position the clamp tightly to the work piece of different width.

Optionally, the lateral adjusting block is provided with a short waist-shaped hole, the extending direction of the short waist-shaped hole is perpendicular to the base, and the bolt penetrates through the short waist-shaped hole to fixedly connect the lateral adjusting block with the positioning seat.

Through adopting above-mentioned technical scheme, because the short waist type hole has been seted up to the side direction regulating block, consequently, can adjust the different relative position of side direction regulating block and positioning seat in vertical direction, realize the height regulation of locating piece, can realize more stably fixing a position the clamp tightly to the work piece of different thickness.

Optionally, a second protection pad is fixedly arranged on the side of the positioning block departing from the pressure spring.

Through adopting above-mentioned technical scheme, the locating piece direct contact work piece can be avoided to the second protection pad, protects the work piece.

Optionally, a third protection pad is fixedly arranged on the top surface of the positioning seat, which deviates from the base.

Through adopting above-mentioned technical scheme, the positioning seat direct contact work piece can be avoided to the third protection pad, protects the work piece.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the vertical pressing assembly, the vertical pressing assembly can position and clamp workpieces with different thicknesses, the application range of the machining clamp is expanded, and the machining efficiency is improved;

2. by arranging the lateral positioning assemblies, all the lateral positioning assemblies clamp and position the workpiece from the width direction, and the lateral positioning assemblies can position and clamp the workpieces with different widths by arranging the pressure spring;

3. through setting up the top spring, the back is accomplished in work piece processing, at the in-process of unscrewing gland nut, and the top spring can automatic top tightly compress tightly the square pole and make and compress tightly the square pole and break away from the work piece automatically for disassemble the speed of taking out the work piece from the machining jig.

Drawings

FIG. 1 is a schematic structural diagram of a machining fixture according to an embodiment of the present application;

FIG. 2 is a cross-sectional view embodying a chuck;

fig. 3 is a schematic view showing the structure of the pressure spring.

Description of reference numerals: 1. a base; 11. an arc-shaped slot; 12. a card slot; 2. positioning seats; 3. a lateral positioning assembly; 31. a lateral adjusting block; 311. a short kidney-shaped hole; 32. positioning blocks; 33. a pressure spring; 4. a vertical hold down assembly; 41. a screw; 411. a compression nut; 412. a chuck; 42. a limiting rod; 43. pressing the square rod; 431. a long waist-shaped hole; 5. a spring is supported; 6. a first protection pad; 7. a second protection pad; 8. and a third protection pad.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses processing anchor clamps, refer to fig. 1 and fig. 2, processing anchor clamps include the base 1 that is used for sectional fixture, base 1's top surface integrated into one piece has four at least positioning seats 2, this embodiment is narrated with four positioning seats 2, the line in proper order of all positioning seats 2 forms a rectangle jointly, the side that each positioning seat 2 deviates from each other is used for following the lateral positioning subassembly 3 of width direction to the work piece location through bolt fixedly connected with, base 1's top surface is equipped with at least two sets of vertical subassemblies 4 that compress tightly that press from both sides tight work piece from the top surface of work piece, this embodiment is narrated with four vertical subassemblies 4 that compress tightly of group, four vertical subassemblies 4 of group keep away from each other, four vertical subassemblies 4 that compress tightly of group are close to a positioning seat 2 respectively.

Referring to fig. 1 and 2, a workpiece is placed on the top surface of the positioning seats 2, all the positioning seats 2 support the workpiece together, four sets of lateral positioning assemblies 3 are used for positioning and clamping the workpiece in the width direction of the workpiece, and the lateral positioning assemblies 3 can position and clamp workpieces with different widths; four groups of vertical pressing assemblies 4 are used for clamping workpieces from the top surfaces of the workpieces, the vertical pressing assemblies 4 can clamp the workpieces with different thicknesses, the whole machining clamp can position, clamp and fix the complex workpieces with different widths and thicknesses, and machining efficiency is improved.

Referring to fig. 1 and 2, the vertical compressing assembly 4 includes a screw 41, a limiting rod 42 and a compressing square rod 43, the limiting rod 42 and the top surface of the base 1 are integrally formed, the top end of the limiting rod 42 penetrates through the compressing square rod 43 through the vicinity of one end of the compressing square rod 43 and is in sliding fit with the compressing square rod 43, the cross section of the limiting rod 42 is circular, the compressing square rod 43 can be abutted against a workpiece towards the bottom surface of the base 1, the compressing square rod 43 is provided with a long waist-shaped hole 431 parallel to the compressing square rod 43, the screw 41 penetrates through the long waist-shaped hole 431 and is in sliding fit with the long waist-shaped hole 431, the top end of the screw 41 is in threaded fit with a compressing nut 411 for compressing the square rod 43, the base 1 is provided with an arc-shaped groove 11 using the vertical projection of the center line of the limiting rod 42 as the center of the circle, the inner wall of the arc-shaped groove 11 is provided with a clamping groove 12, one end of the screw 41 far away from the compressing square rod 43 is located in the arc-shaped groove 11 and is fixedly connected with a chuck 412, the chuck 412 is located the draw-in groove 12, and the size of chuck 412 is greater than the opening size of arc wall 11, and the diameter of screw rod 41 is less than the opening size of arc wall 11, and screw rod 41 cover is equipped with top spring 5, and top spring 5 receives pressure all the time, and the one end of top spring 5 supports tight cooperation with compressing tightly square rod 43, and the other end and the base 1 of top spring 5 support tight cooperation.

Referring to fig. 1 and 2, before a workpiece is placed, a pressing square rod 43 rotates around a limiting rod 42 to serve as a placing and avoiding position of the workpiece, the pressing square rod 43 drives a screw rod 41 to rotate around the limiting rod 42, a clamping groove 12 limits the screw rod 41 in an arc-shaped groove 11 through a chuck 412, when the pressing square rod 43 rotates around the limiting rod 42, the pressing square rod 43 drives the screw rod 41 to move in the arc-shaped groove 11, the workpiece is placed on the top surface of a positioning seat 2, the pressing square rod 43 rotates around the limiting rod 42 in a reverse direction to be above the workpiece, a pressing nut 411 is screwed, the pressing nut 411 cooperates with the screw rod 41 to enable the pressing square rod 43 to press the workpiece, the workpiece is positioned and clamped, and the vertical pressing assembly 4 can clamp workpieces with different thicknesses; because the pressing square rod 43 is provided with the long waist-shaped hole 431, the screw rod 41 can move in the long waist-shaped hole 431 to realize different relative position relations between the screw rod 41 and the pressing square rod 43, the pressing square rod can adapt to different lengths of workpieces, and the operation is simple and convenient; after the workpiece is machined, in the process of loosening the compression nut 411, the top spring 5 can automatically tightly push the compression square rod 43 to enable the compression square rod 43 to automatically separate from the workpiece, so that the workpiece is disassembled from the machining fixture and taken out at a high speed.

Referring to fig. 1 and 3, the lateral positioning assembly 3 includes a lateral adjusting block 31, a positioning block 32 and a pressure spring 33, the lateral adjusting block 31 is provided with a short waist-shaped hole 311, the extending direction of the short waist-shaped hole 311 is perpendicular to the base 1, a bolt penetrates through the short waist-shaped hole 311 to fixedly connect the lateral adjusting block 31 with the positioning seat 2, the pressure spring 33 is located between the positioning block 32 and the lateral adjusting block 31, one end of the pressure spring 33 is fixedly connected with the lateral adjusting block 31, the other end of the pressure spring 33 is fixedly connected with the positioning block 32, and the positioning block 32 can be abutted against and tightly matched with the side face of the workpiece.

Referring to fig. 1 and 3, after the lateral adjusting block is fixedly connected with the positioning seat 2 by a bolt, the positioning block 32 is pressed against the workpiece by the lateral adjusting block 31 through the pressure spring 33, the pressure spring 33 is pressed, all the lateral positioning assemblies 3 clamp and position the workpiece from the width direction together, and the arrangement of the pressure spring 33 can enable the lateral positioning assemblies 3 to position and clamp the workpieces with different widths; because the lateral adjusting block 31 is provided with the short waist-shaped hole 311, different relative positions of the lateral adjusting block 31 and the positioning seat 2 can be adjusted in the vertical direction according to the thickness of the workpiece, so that the height of the positioning block 32 can be adjusted, and the workpiece with different thicknesses can be positioned and clamped more stably.

Referring to fig. 1 and 3, the pressing square rod 43 is fixedly connected with a first protection pad 6 at the bottom surface facing the base 1, and the first protection pad 6 can prevent the pressing square rod 43 from directly contacting the workpiece to protect the workpiece; the side surface of the positioning block 32, which is far away from the pressure spring 33, is fixedly connected with a second protection pad 7, and the second protection pad 7 can prevent the positioning block 32 from directly contacting the workpiece to protect the workpiece; the top surface of the positioning seat 2 deviating from the base 1 is fixedly connected with a third protection pad 8, and the third protection pad 8 can prevent the positioning seat 2 from directly contacting with a workpiece to protect the workpiece.

The implementation principle of the processing clamp in the embodiment of the application is as follows: before placing the work piece, make and compress tightly square pole 43 and rotate around gag lever post 42 and dodge the position for placing of work piece, it drives screw rod 41 and removes in arc wall 11 to compress tightly square pole 43, draw-in groove 12 passes through chuck 412 with screw rod 41 restriction in arc wall 11, place the top surface at positioning seat 2 with the work piece, all positioning seats 2 support the work piece jointly, will compress tightly square pole 43 and wind gag lever post 42 antiport to the work piece top, tighten gland nut 411, gland nut 411 cooperates screw rod 41 to make and compresses tightly square pole 43 and compress tightly the work piece, fix a position the clamp to the work piece.

The lateral adjusting block 31 is fixedly connected with the positioning seat 2 through a bolt, the positioning block 32 is abutted against the workpiece through a pressure spring 33, the pressure spring 33 bears pressure, and all the lateral positioning assemblies 3 clamp and position the workpiece from the width direction together.

After the workpiece is machined, the compression nut 411 is unscrewed, and in the process of unscrewing the compression nut 411, the top spring 5 can automatically jack the compression square rod 43 to enable the compression square rod 43 to automatically separate from the workpiece, so that the workpiece is disassembled from the machining fixture and taken out at a high speed.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a processing anchor clamps which characterized in that: comprises a base (1), the top surface of the base (1) is fixedly provided with at least four positioning seats (2), the sequential connection lines of all the positioning seats (2) jointly form a quadrangle, the side surfaces of the positioning seats (2) which deviate from each other are fixedly connected with a lateral positioning component (3) used for positioning a workpiece from the width direction through bolts, the top surface of the base (1) is provided with at least two groups of vertical pressing components (4), the vertical pressing components (4) are mutually far away, each group of vertical pressing components (4) comprise a screw rod (41), a limiting rod (42) and a pressing square rod (43), the limiting rod (42) is fixedly connected with the base (1), the top end of the limiting rod (42) penetrates through the pressing square rod (43) and is in rotating sliding fit with the pressing square rod (43), the pressing square rod (43) is used for pressing the workpiece, the screw rod (41) penetrates through the pressing square rod (43) and is in sliding fit with the pressing square rod (43), the top end screw-thread fit of screw rod (41) has gland nut (411) that is used for compressing tightly square bar (43), and screw rod (41) and base (1) joint and sliding fit, and screw rod (41) can slide as the centre of a circle with the vertical projection of gag lever post (42) central line.

2. A machining jig according to claim 1, characterized in that: base (1) is seted up arc wall (11) with the vertical projection of the central line of gag lever post (42) as the centre of a circle, draw-in groove (12) have been seted up jointly to the inner wall of arc wall (11), the one end that compresses tightly square bar (43) is kept away from in screw rod (41) is located arc wall (11), the one end that compresses tightly square bar (43) is kept away from in screw rod (41) has set firmly chuck (412), chuck (412) are located draw-in groove (12), the size of chuck (412) is greater than the opening size of arc wall (11), the diameter of screw rod (41) is less than the opening size of arc wall (11), it has seted up long waist type hole (431) to compress tightly square bar (43), screw rod (41) run through long waist type hole (431) and with long waist type hole (431) sliding fit.

3. A machining jig according to claim 1, characterized in that: the screw rod (41) is sleeved with a top spring (5), one end of the top spring (5) is in abutting fit with the pressing square rod (43), and the other end of the top spring (5) is in abutting fit with the base (1).

4. A machining jig according to claim 1, characterized in that: the pressing square rod (43) is fixedly provided with a first protection pad (6) on the bottom surface facing the base (1).

5. A machining jig according to claim 1, characterized in that: the lateral positioning assembly (3) comprises a lateral adjusting block (31), a positioning block (32) and a pressure spring (33), the lateral adjusting block is fixedly connected with the positioning seat (2) through a bolt, and the pressure spring (33) is located between the positioning block (32) and the lateral adjusting block (31) and used for enabling the positioning block (32) to abut against a workpiece.

6. A machining jig according to claim 5, characterized in that: short waist-shaped hole (311) have been seted up in side direction regulating block (31), and the extending direction perpendicular to base (1) in short waist-shaped hole (311), bolt pass short waist-shaped hole (311) with side direction regulating block (31) and positioning seat (2) fixed connection.

7. A machining jig according to claim 5, characterized in that: and a second protection pad (7) is fixedly arranged on the side surface of the positioning block (32) deviating from the pressure spring (33).

8. A machining jig according to claim 1, characterized in that: and a third protective pad (8) is fixedly arranged on the top surface of the positioning seat (2) deviating from the base (1).