Linear cutting positioning clamp for thin-wall workpiece

Abstract

The utility model discloses a thin-wall workpiece linear cutting positioning clamp which comprises a support, a left clamping plate, a right clamping plate, a bolt, a lock nut, a reinforcing block, a first push rod, an electric telescopic cylinder, a retaining sleeve, a left supporting plate, a right supporting plate, a second push rod, a carrier plate, a pressing block, an ejector block, a guide rod, a tension spring and a supporting sleeve. The right clamping plate is fixedly installed on the left clamping plate through a bolt and a lock nut. The positioning clamp can be provided with a plurality of groups of pressing blocks so as to prolong the length of a thin-wall pipe workpiece supporting area of the pressing blocks, the use requirement for clamping and positioning a long-size thin-wall pipe workpiece can be met, and under the condition that the length size of the thin-wall pipe workpiece supporting area of the pressing blocks exceeds 1 / 3 of the overall length size of the pressing blocks, the thin-wall pipe workpiece can be clamped and positioned. The pressing block does not need to apply too large external expansion force to the inner wall of the thin-wall pipe workpiece, the thin-wall pipe workpiece can be firmly clamped and positioned, and the problem that the thin-wall pipe workpiece deforms or cracks due to too large clamping force is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to wire cutting technical field especially, it is a kind of thin-walled workpiece wire cutting positioning fixture. BACKGROUND

[0002] Wire cutting is the processing method using moving wire (molybdenum wire, copper wire or alloy wire) as electrode wire, pulse electric spark discharge between electrode wire and workpiece, high temperature is generated to make metal melt or vaporize, form cutting gap, thereby cutting out parts. Because thin-walled pipe workpiece is prone to extrusion deformation when clamping and fixing, the current way of supporting the inner wall of thin-walled pipe workpiece by three-jaw chuck, since the clamping jaw of three-jaw chuck can only support the position of about 5 cm of the outer end of thin-walled pipe workpiece, for workpiece with length exceeding 500 mm, under the action of workpiece gravity, three-jaw chuck needs to provide larger outward expansion support force, and larger outward expansion support force is easy to cause deformation or cracking of thin-walled pipe workpiece. SUMMARY

[0003] The utility model solves the technical problem that: provide a kind of wire cutting positioning fixture for extending the outward expansion support length of thin-walled pipe workpiece to reduce the requirement of outward expansion support force.

[0004] In order to solve the above technical problems, the present application is realized by the following technical scheme: a thin-walled workpiece wire cutting positioning clamp, comprising a support, a left clamping plate, a right clamping plate, a bolt, a lock nut, a reinforcing block, a first push rod, an electric telescopic cylinder, a retaining sleeve, a left support plate, a right support plate, a second push rod, a carrier plate, a pressing block, a top block, a guide rod, a tension spring and a first support sleeve, the support is fixedly installed on a wire cutting equipment main body, the left clamping plate is fixedly installed on the support, the right clamping plate is fixedly installed on the left clamping plate through the bolt and the lock nut, the reinforcing block is clamped and fixedly installed between the left clamping plate and the right clamping plate, a long slot is formed in the reinforcing block, the first push rod is slidably installed in the long slot, the electric telescopic cylinder is fixedly installed on the support, an execution rod of the electric telescopic cylinder is fixedly connected with the first push rod, the retaining sleeve and the first support sleeve are coaxially and fixedly installed on the right clamping plate, the left support plate and the right support plate are fixedly installed at left and right ends of the retaining sleeve, a first guide hole is formed in the reinforcing block and is in communication with the first support sleeve, the second push rod is slidably installed in the left support plate and the right support plate, a left end of the second push rod is also slidably installed in the first guide hole, the second push rod is fixedly connected with the first push rod, the pressing block is slidably installed in upper and lower parts of the retaining sleeve, the top block is fixedly installed on upper and lower outer walls of the second push rod and is matched with the pressing block, a contact surface of the top block and the pressing block is arranged as an inclined surface structure, a guide channel is formed in the retaining sleeve, the carrier plate is slidably arranged in the guide channel, the guide rod is fixedly installed on the carrier plate, an inner end of the pressing block is slidably sleevedly installed on the guide rod, the tension spring is sleevedly installed on the guide rod, and upper and lower ends of the tension spring are fixedly connected with the pressing block and the carrier plate respectively, a sliding channel in communication with the guide channel is further formed in the second push rod, and the guide rod is located in the sliding channel.

[0005] Preferably, the bolt is sleevedly installed with a second support sleeve, and the second support sleeve acts on the left clamping plate and the right clamping plate at two ends.

[0006] Preferably, an embedded groove is arranged on an inner plate surface of the left clamping plate and the right clamping plate, and the reinforcing block is arranged in the embedded groove.

[0007] Preferably, the slope of the inclined surface structure arranged in cooperation with the top block and the pressing block is 15°-45°.

[0008] Compared with the prior art, the positioning clamp can be provided with multiple pressing blocks to prolong the length of the pressing block supporting area of the thin-walled pipe workpiece, can meet the use requirement of clamping and positioning of the long-size thin-walled pipe workpiece, and can realize firm clamping and positioning of the thin-walled pipe workpiece without exerting excessive outward expansion force on the inner wall of the thin-walled pipe workpiece when the length of the pressing block supporting area of the thin-walled pipe workpiece exceeds 1 / 3 of the overall length of the thin-walled pipe workpiece, thereby avoiding the problems of deformation or cracking of the thin-walled pipe workpiece caused by excessive clamping force. BRIEF DESCRIPTION OF DRAWINGS

[0009] The utility model is further illustrated in connection with the drawings.

[0010] Figure 1 It is the internal structure schematic diagram of the utility model.

[0011] Figure 2 It is Figure 1 The M place amplification structure schematic diagram of Specific implementation

[0012] The utility model is described in detail in connection with specific implementation:

[0013] As Figure 1 And Figure 2 A kind of thin-wall workpiece wire cutting positioning fixture shown in figure, including support 1, left clamping plate 2, right clamping plate 3, bolt 41, lock nut 42, reinforcing block 5, first push rod 52, electric telescopic cylinder 53, retaining sleeve 6, left support plate 61, right support plate 62, second push rod 63, carrier plate 64, pressing block 7, top block 8, guide rod 9, tension spring 91 and first support sleeve 10, the support 1 is fixedly installed on wire cutting equipment main body, the left clamping plate 2 is fixedly installed on support 1, the right clamping plate 3 is fixedly installed on left clamping plate 2 by bolt 41 and lock nut 42, the reinforcing block 5 is clamped and fixedly installed between left clamping plate 2, right clamping plate 3, the reinforcing block 5 is provided with long hole 51, the first push rod 52 is slidably installed in long hole 51, the electric telescopic cylinder 53 is fixedly installed on support 1, the electric telescopic cylinder 53's execution rod is fixedly connected with first push rod 52, the retaining sleeve 6, first support sleeve 10 are coaxial and fixedly installed on right clamping plate 3, the left support plate 61, right support plate 62 are fixedly installed on the left and right ends of retaining sleeve 6, the reinforcing block 5 is provided with first guide hole that is connected, the second push rod 63 is slidably installed in left support plate 61, right support plate 62, the second push rod 63 left end is also slidably installed in first guide hole, the second push rod 63 is fixedly connected with first push rod 52, the pressing block 7 is slidably installed in the upper and lower parts of retaining sleeve 6, the top block 8 is fixedly installed on the upper and lower outer walls of second push rod 63 with the cooperation of pressing block 7, the contact surface of top block 8 and pressing block 7 is provided as inclined plane structure, the retaining sleeve 6 is provided with guide channel 631, the carrier plate 64 is slidably placed in guide channel 631, the guide rod 9 is fixedly installed on carrier plate 64, the inner end of pressing block 7 is slidably sleeved and installed on guide rod 9, the tension spring 91 is sleeved and installed on guide rod 9, the upper and lower ends of tension spring 91 are fixedly connected with pressing block 7, carrier plate 64 respectively, the second push rod 63 is also provided with sliding channel 632 that is connected with guide channel 631, the guide rod 9 is located in sliding channel 632.The slope of the inclined plane structure that top block 8 and pressing block 7 cooperate is 18 °.

[0014] The bolt 41 is sleeved and mounted with a second supporting sleeve 43, two ends of the second supporting sleeve 43 respectively act on the left clamping plate 2 and the right clamping plate 3, so as to avoid the deformation problem of the left clamping plate 2 and the right clamping plate 3 caused by the over-tightening of the lock nut 42.

[0015] The inner plate surface of the left clamping plate 2 and the right clamping plate 3 is provided with an embedded groove, the reinforcing block 5 is closely fitted in the embedded groove, and the embedded groove can support the reinforcing block 5, so as to avoid the displacement problem of the reinforcing block 5 after clamping and fixing.

[0016] The execution rod of the electric telescopic cylinder 53 is retracted, the pressure block 7 is pulled inward under the action of the tension spring 91, the thin-walled pipe workpiece 10 is sleeved and mounted on the first supporting sleeve 10 for positioning, the execution rod of the electric telescopic cylinder 53 is extended, the first push rod 52 and the second push rod 63 and the top block 8 are pushed to move rightwards, the top block 8 contacts the pressure block 7, the pressure block 7 is pushed to move outward, the outer surface of the pressure block 7 is provided with a circular arc surface structure, the pressure block 7 supports and fixes the thin-walled pipe workpiece 10 after contacting the thin-walled pipe workpiece 10, the distance between the right end surface of a single pressure block 7 and the left end surface of the thin-walled pipe workpiece 10 is 10 cm, and when two pressure blocks 7 are arranged, the distance between the right end surface of the right pressure block 7 and the left end surface of the thin-walled pipe workpiece 10 is 20 cm.

Claims

1. A thin-walled workpiece wire-cut positioning fixture, characterized by: The utility model provides a left clamp plate (2), right clamp plate (3), bolt (41), lock nut (42), reinforcing block (5), first push rod (52), electric telescopic cylinder (53), keep cover (6), left support plate (61), right support plate (62), second push rod (63), carrier plate (64), pressing block (7), top block (8), guide rod (9), tension spring (91) and first support cover (10) are included, the bracket 1 is fixedly installed on the line cutting equipment main body, the left clamp plate (2) is fixedly installed on the bracket (1), the right clamp plate (3) is fixedly installed on the left clamp plate (2) through bolt (41) and lock nut (42), the reinforcing block (5) is clamped and fixedly installed between the left clamp plate (2), right clamp plate (3), the reinforcing block (5) is provided with long strip hole (51), the first push rod (52) is slidably installed in long strip hole (51), the electric telescopic cylinder (53) is fixedly installed on the bracket (1), the electric telescopic cylinder (53) is fixedly connected with the first push rod (52), the keep cover (6), first support cover (10) are coaxial and fixedly installed on the right clamp plate (3), the left support plate (61), right support plate (62) are fixedly installed on the left and right ends of keep cover (6), the reinforcing block (5) is provided with first guide hole that is communicated, the second push rod (63) is slidably installed in the left support plate (61), right support plate (62), the second push rod (63) left end is also slidably installed in the first guide hole, the second push rod (63) is fixedly connected with the first push rod (52), the pressing block (7) is slidably installed in the upper and lower parts of keep cover (6), the top block (8) is fixedly installed on the upper and lower outer walls of the second push rod (63) and cooperates with the pressing block (7), the contact surface of the top block (8) and the pressing block (7) is provided with inclined plane structure, the keep cover (6) is provided with guide channel (631), the carrier plate (64) is slidably arranged in the guide channel (631), the guide rod (9) is fixedly installed on the carrier plate (64), the inner end of the pressing block (7) is slidably sleeved and installed on the guide rod (9), the tension spring (91) is sleeved and installed on the guide rod (9), the upper and lower ends of the tension spring (91) are fixedly connected with the pressing block (7) and the carrier plate (64) respectively, the second push rod (63) is further provided with sliding channel (632) that is communicated with the guide channel (631), and the guide rod (9) is located in the sliding channel (632).

2. The thin-walled workpiece wire saw positioning fixture of claim 1, wherein: The bolt (41) is sleeved and installed with the second support cover (43), and the two ends of the second support cover (43) act on the left clamp plate (2) and the right clamp plate (3) respectively.

3. The thin-walled workpiece wire saw positioning fixture of claim 1, wherein: The inner plate surface of the left clamp plate (2) and the right clamp plate (3) is provided with an embedding groove, and the reinforcing block (5) is arranged in the embedding groove.

4. The thin-walled workpiece wire saw positioning fixture of claim 1, wherein: The slope of the inclined plane structure provided by the top block (8) and the pressing block (7) is 15°-45°.

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