Positioning tool for welding machine tool assembly

Abstract

The invention belongs to the field of machine tool assembly welding and positioning, and particularly relates to a positioning tool for machine tool assembly welding, which comprises a positioning piece arranged at the upper part of a machine tool body, the positioning piece is formed by splicing a plurality of rectangular plates, and grooves are formed in the rectangular plates; a groove is formed in the machine tool body, a distance fixing mechanism used for fixing the distance between the two guide rail bases placed on the machine tool body is arranged in the groove, the distance fixing mechanism comprises a driving assembly and a distance fixing assembly, and the driving assembly comprises a toothed plate arranged in the groove. Through mechanical transmission of the distance fixing mechanism and scale adjustment of the positioning assembly, the distance between the two guide rail seats and the distance between the two guide rail seats and the front side and the rear side of the machine tool body are accurately controlled, the problem of positioning deviation caused by lack of quantitative reference in manual welding is effectively solved, the position accuracy of the guide rail seats after welding is guaranteed, and the production efficiency is improved. And through a plurality of rectangular plate plug-in type modular structures, the tool can adapt to guide rail seats with different sizes, and the universality of the tool is improved.

Description

Technical Field

[0001] The present invention relates to the field of welding positioning of machine tool components, and specifically to a positioning tooling for welding machine tool components. Background Art

[0002] In the process of machine tool manufacturing, as a key load-bearing component for the motion accuracy of the machine tool, the welding quality between the guide rail seat and the machine tool bed directly affects the overall performance of the machine tool. To ensure the relative position accuracy between the guide rail seat and the machine tool bed during the welding process, the positioning tooling has become an indispensable auxiliary device. Currently, whether it is manual welding or machine welding, it is necessary to rely on the positioning tooling to complete the positioning before welding.

[0003] In the scenario of manual welding, workers usually use simple jigs or manually adjustable positioning components to fix the guide rail seat. For example, tools such as bolt pressing plates and angle iron brackets are used to temporarily fix the guide rail seat at the preset position on the machine tool bed. Such positioning tooling often relies on the experience of workers for installation and adjustment. The operation process is cumbersome and the accuracy is difficult to guarantee. In addition, the manually adjustable positioning components lack a quantitative positioning reference, and there are significant differences when different workers operate, resulting in positioning deviations of the guide rail seat, and further causing non-compliance of the straightness and parallelism of the guide rail after welding.

[0004] For machine welding, such as automated welding special machines or industrial robot welding systems, customized positioning tooling is usually equipped, and the quick positioning and clamping of the guide rail seat are realized through driving mechanisms such as pneumatic and hydraulic. However, the complex structure of the machine welding positioning tooling not only makes the investment cost relatively high, but also increases the difficulty of equipment maintenance. Moreover, for guide rail seats of different sizes, it is necessary to replace the matching positioning tooling again, increasing the debugging time. Both positioning methods have certain deficiencies. Summary of the Invention

[0005] In view of the above problems, a positioning tooling for welding machine tool components provided by the embodiments of the present application can accurately position the guide rail seat, can also position guide rail seats of different sizes, and reduces the subsequent maintenance cost through a splicing method.

[0006] To achieve the above object, the embodiments of the present application provide the following technical solutions: The present invention provides a positioning tooling for welding machine tool components, including a positioning member arranged on the upper part of the machine tool body. The positioning member is spliced by a plurality of rectangular plates, and a groove is opened inside the rectangular plate. A distance determining mechanism for determining the distance between two guide rail seats placed on the machine tool body is arranged in the groove.

[0007] The distance - determining mechanism includes a driving component and a distance - determining component. The driving component includes a toothed plate disposed in the groove. The distance - determining component includes two rotating shafts rotatably disposed in the groove and symmetrically distributed front and back. At the upper outer side of the rotating shaft, a gear meshing with the toothed plate is fixedly provided. At the lower outer side of the rotating shaft, a rotating plate is fixedly provided. The rotating plate penetrates through one side of the groove and is rotatably provided with a distance - determining wheel, and the outer side of the distance - determining wheel contacts one side of the guide rail seat.

[0008] A clamping component for clamping the two guide rails after distance - determination is provided at the upper part of the rectangular plate. The clamping component includes a connecting rod fixedly provided at the upper part of the rectangular plate. A sleeve is slidably provided on the connecting rod, and telescopic members are provided on both the front and back sides of the sleeve.

[0009] Fixing components are provided on the mutually - remote sides of the two rectangular plates on the left and right. Positioning components for aligning and positioning the guide rail seat are provided on the mutually - approaching sides of the two fixing components.

[0010] According to a preferred embodiment, the driving component further includes a threaded rod rotatably disposed in the groove. A rectangular block is fixedly provided at the right end of the threaded rod. A rectangular opening for cooperating with the rectangular block on the adjacent distance - determining mechanism is provided at the left end of the threaded rod. The threaded rods on two adjacent distance - determining mechanisms are connected by inserting the corresponding rectangular blocks into the corresponding rectangular openings. A threaded sleeve is threadedly provided on the threaded rod, and the upper part of the threaded sleeve is fixedly connected to the bottom of the toothed plate.

[0011] According to a preferred embodiment, a turntable is provided on the left side of the left - hand rectangular plate. An insertion block cooperating with the rectangular opening is fixedly provided on the right side of the turntable, and the insertion block is inserted into the left - most rectangular opening.

[0012] According to a preferred embodiment, the clamping component further includes a connecting ring slidably provided on the connecting rod, and the upper part of the sleeve is rotatably connected to the bottom of the connecting ring. A first return spring is sleeved on the outer side of the connecting rod, and one end of the first return spring away from the connecting rod is connected to the upper part of the connecting ring.

[0013] According to a preferred embodiment, the telescopic member includes a second return spring slidably disposed inside the sleeve. One end of the second return spring away from the connecting rod is fixedly provided with a moving rod. The end of the moving rod away from the second return spring penetrates through the inside of the sleeve and is fixedly provided with a clamping block. One side of the clamping block close to the connecting rod abuts against one side of the guide rail seat.

[0014] According to a preferred embodiment, two limiting rods symmetrically distributed front and back are fixedly provided at the upper part of the rectangular plate. Two limiting openings symmetrically distributed front and back and cooperating with the two limiting rods are provided at the bottom of the rectangular plate.

[0015] According to a preferred embodiment, the fixing component includes a mounting plate disposed on one side of the corresponding rectangular plate through two bolts 1, and locking members for locking the mounting plate to the machine tool body are fixedly provided on one side of the two mounting plates close to each other.

[0016] According to a preferred embodiment, the positioning component includes two cross plates fixedly provided on the side of the mounting plate close to the rectangular plate and symmetrically distributed front and back. A sliding plate is slidably disposed between the two cross plates. The sliding plate and the corresponding rectangular plate are locked by bolts 2. Positioning plates are fixedly provided at the bottoms of the two vertical sections of the sliding plate. One side of the positioning plate close to the guide rail seat contacts the guide rail seat, and scales are provided on one side of the cross plate close to the guide rail seat and on the upper part of the cross plate.

[0017] According to a preferred embodiment, docking blocks are fixedly provided at the right ends of the front and rear sides of the rectangular plate, and rectangular shells for cooperating with the docking blocks are fixedly provided at the left ends of the front and rear sides of the rectangular plate. Adjacent docking blocks and rectangular shells are inserted and locked by positioning pins.

[0018] According to a preferred embodiment, a guiding port communicating with the groove is opened at the upper end inside the rectangular plate. A guiding block is fixedly provided at the upper part of the toothed plate. The upper part of the guiding block penetrates into the guiding port and is slidably connected with the guiding port. A plurality of balls are provided at the bottom of the rectangular plate, and the outer sides of the balls are in rolling contact with the upper part of the machine tool body.

[0019] Compared with the prior art, a positioning tool for welding a machine tool component provided by an embodiment of the present invention has the following beneficial effects: 1. Through the mechanical transmission of the distance determining mechanism and the scale adjustment of the positioning component, the present invention accurately controls the distance between the two guide rail seats and the distances between the two guide rail seats and the front and rear sides of the machine tool bed, effectively solving the positioning deviation problem caused by the lack of a quantitative reference in manual welding, ensuring the accuracy of the position of the guide rail seat after welding, and through the plug-in modular structure of multiple rectangular plates, it can adapt to guide rail seats of different sizes, improving the versatility of the tooling.

[0020] 2. A driving component and a distance determining component are provided in the present invention. By rotating the turntable to drive the threaded rod to drive the toothed plate, the gear and the distance determining wheel to move, at this time, the accurate adjustment of the distance between the two guide rail seats is realized through the scale on the cross plate, and then the lateral alignment of the two guide rail seats and the accurate adjustment of the distance between the two guide rail seats and the machine tool bed can be realized in cooperation with the positioning component, ensuring the welding accuracy of the guide rail seat and solving the problems of no reference for traditional positioning and deviation during welding.

[0021] 3. In the present invention, both the rectangular plate and the threaded rod adopt a plug-in modular structure. The number of rectangular plates can be freely increased or decreased according to the length of the guide rail base. The splicing structure is quickly locked by positioning pins, which can adapt to guide rail bases of different sizes without customizing chemical tooling. At the same time, when components in the modular structure (such as a single rectangular plate, threaded rod) are damaged, they can be replaced independently without replacing the entire tooling, greatly reducing the maintenance cost compared with traditional machine-welded positioning tooling. Brief Description of the Drawings

[0022] Figure 1 It is a three-dimensional structure diagram of the present invention.

[0023] Figure 2 It is a sectional structure diagram of the positioning member in the present invention.

[0024] Figure 3 It is a separated structure diagram of the threaded rod and the turntable in the present invention.

[0025] Figure 4 It is a separated structure diagram of two adjacent threaded rods in the present invention.

[0026] Figure 5 It is a sectional structure diagram of the clamping assembly in the present invention.

[0027] Figure 6 It is a connection structure diagram of the rectangular plate and the fixing assembly in the first perspective of the present invention.

[0028] Figure 7 It is a connection structure diagram of the rectangular plate and the fixing assembly in the second perspective of the present invention.

[0029] Figure 8 It is a connection structure diagram of the locking member and the machine tool in the present invention.

[0030] Figure 9 It is a connection state diagram of the clamping assembly and the rectangular plate when not in use in the present invention.

[0031] Reference numerals in the drawings: 1, machine tool bed; 2, positioning member; 3, rectangular plate; 4, guide rail base; 5, distance determining mechanism; 51, driving assembly; 511, toothed plate; 512, threaded rod; 5,13, rectangular block; 514, rectangular opening; 515, threaded sleeve; 52, distance determining component; 521, rotating shaft; 522, gear; 523, rotating plate; 524, distance determining wheel; 53, clamping assembly; 531, connecting rod; 532, barrel sleeve; 533, telescopic member; 534, connecting ring; 535, first reset spring; 536, second reset spring; 537, moving rod; 538, clamping block; 6, fixing assembly; 61, mounting plate; 62, locking member; 63, positioning component; 631, cross plate; 632, sliding plate; 633, positioning plate; 7, turntable; 8, inserting block; 9, limiting rod; 10, limiting opening; 11, docking block; 12, rectangular shell; 13, guiding block. Detailed implementation manners

[0032] The following further elaborates on this application in conjunction with Figure 1 - Figure 9 the appended drawings.

[0033] Please refer to Figure 1 and Figure 2 for a positioning tool for welding a machine tool component, which includes a positioning member 2 arranged on the upper part of the machine tool bed 1. The positioning member 2 is formed by splicing a plurality of rectangular plates 3. Grooves are provided inside the rectangular plates 3, and a distance - determining mechanism 5 for determining the distance between two guide rail seats 4 placed on the machine tool bed 1 is arranged in the grooves.

[0034] Referring to Figure 2 , Figure 3 and Figure 4 , the distance - determining mechanism 5 includes a driving component 51 and a distance - determining component 52. The driving component 51 includes a toothed plate 511 arranged in the groove. The driving component 51 further includes a threaded rod 512 rotatably arranged in the groove. A rectangular block 513 is fixedly arranged at the right end of the threaded rod 512. A rectangular opening 514 for cooperating with the rectangular block 513 on the adjacent distance - determining mechanism 5 is provided at the left end of the threaded rod 512. The threaded rods 512 on two adjacent distance - determining mechanisms 5 are connected by inserting the corresponding rectangular blocks 513 into the corresponding rectangular openings 514. A threaded sleeve 515 is arranged on the threaded rod 512, and the upper part of the threaded sleeve 515 is fixedly connected to the bottom of the toothed plate 511.

[0035] Referring to Figure 2 and Figure 3 , docking blocks 11 are fixedly arranged at the right ends of the front and rear sides of the rectangular plate 3, and rectangular shells 12 for cooperating with the docking blocks 11 are fixedly arranged at the left ends of the front and rear sides of the rectangular plate 3. The adjacent docking blocks 11 and rectangular shells 12 are inserted and locked by positioning pins.

[0036] When welding the guide rail base 4 to the machine tool bed 1, first, the staff place two guide rail bases 4 to be welded on the machine tool bed 1. Then, an appropriate number of rectangular plates 3 are selected according to the length of the guide rail base 4 and placed on the machine tool bed 1. A plurality of rectangular plates 3 are located between the two guide rail bases 4. When splicing the plurality of rectangular plates 3, the docking blocks 11 on the front and rear sides of the rectangular plate 3 are inserted into the corresponding rectangular shells 12 on the adjacent rectangular plate 3. At the same time, the rectangular opening 514 at the left end of the previous threaded rod 512 is accurately inserted into the rectangular block 513 at the right end of the next threaded rod 512 to achieve the coaxial splicing of the adjacent threaded rods 512, forming a continuous drive shaft structure. Then, a positioning pin is used to pass through the preset pin holes of the docking block 11 and the rectangular shell 12 to firmly lock the adjacent rectangular plates 3, ensuring the overall stability of the positioning member 2 after splicing and avoiding displacement during use. The method of splicing a plurality of rectangular plates 3 facilitates the positioning of guide rail bases 4 of different sizes.

[0037] Refer to Figure 1 、 Figure 6 、 Figure 7 and Figure 8 , on the mutually remote sides of the two rectangular plates 3 located on the left and right, fixing components 6 are provided. The fixing component 6 includes mounting plates 61 arranged on one side of the corresponding rectangular plate 3 through two bolts 1. On the mutually close sides of the two mounting plates 61, locking members 62 for locking the mounting plates 61 to the machine tool bed 1 are fixedly arranged (the locking member 62 is an existing push-pull type quick clamp).

[0038] Refer to Figure 1 、 Figure 6 and Figure 7 , on the mutually close sides of the two fixing components 6, positioning components 63 for positioning the guide rail base 4 in the left-right alignment are provided. The positioning component 63 includes two cross plates 631 fixedly arranged on the side of the mounting plate 61 close to the rectangular plate 3 and symmetrically distributed front and rear. A sliding plate 632 is slidably arranged between the two cross plates 631. The sliding plate 632 is locked to the corresponding rectangular plate 3 through a bolt 2. On the bottoms of the two vertical sections of the sliding plate 632, positioning plates 633 are fixedly arranged. The side of the positioning plate 633 close to the guide rail base 4 contacts the guide rail base 4, and scales are provided on both the side of the positioning plate 633 close to the guide rail base 4 and the upper part of the cross plate 631.

[0039] After splicing multiple rectangular plates 3, the worker can install the mounting plate 61 on the corresponding rectangular plate 3 through bolt one. At this time, one side of the mounting plate 61 is attached to the outer side of the machine tool bed 1. Then, the worker pushes the slide plates 632 on both sides to drive the multiple positioning plates 633 on both sides to approach each other. During the pushing process, observe the scale marks on the upper part of the cross plate 631. Taking the scale values on both sides as a reference, ensure that the moving distances of the slide plates 632 on both sides are the same. Stop moving the slide plates 632 after the positioning plates 633 are attached to the guide rail base 4, and then lock the slide plates 632 through bolt two. At this time, using the scale on the cross plate 631 can ensure that the distances between the left and right sides of the two guide rail bases 4 and the left and right sides of the machine tool bed 1 are the same, achieving the horizontal alignment of the guide rail bases 4, and then completing the preliminary positioning of the two guide rail bases 4.

[0040] Refer to Figure 1 , Figure 5 and Figure 9 , a clamping assembly 53 for clamping the two guide rail bases 4 after distance setting is arranged on the upper part of the rectangular plate 3. The clamping assembly 53 includes a connecting rod 531 fixedly arranged on the upper part of the rectangular plate 3. A sleeve 532 is slidably arranged on the connecting rod 531. Telescopic members 533 are arranged on both the front and rear sides of the sleeve 532. The telescopic member 533 includes a return spring two 536 slidably arranged inside the sleeve 532. One end of the return spring two 536 away from the connecting rod 531 is fixedly provided with a moving rod 537. One end of the moving rod 537 away from the return spring two 536 penetrates out of the inside of the sleeve 532 and is fixedly provided with a clamping block 538. One side of the clamping block 538 close to the moving rod 537 abuts against one side of the guide rail base 4.

[0041] Refer to Figure 5 , the clamping assembly 53 further includes a connecting ring 534 slidably arranged on the connecting rod 531, and the upper part of the sleeve 532 is rotatably connected to the bottom of the connecting ring 534. A return spring one 535 is sleeved on the outer side of the connecting rod 531. One end of the return spring one 535 away from the connecting rod 531 is connected to the upper part of the connecting ring 534.

[0042] Refer to Figure 5 and Figure 9 , two limiting rods 9 symmetrically distributed front and back are fixedly arranged on the upper part of the rectangular plate 3. Two limiting ports 10 symmetrically distributed front and back and used in cooperation with the two limiting rods 9 are opened at the bottom of the sleeve 532.

[0043] After the preliminary positioning of the two guide rail seats 4, the staff can push the two guide rail seats 4 to contact the front side and the rear side of the positioning member 2 respectively. Then, the staff can pull the barrel sleeve 532 upward to move the barrel sleeve 532 out from between the two limit rods 9. During this process, the barrel sleeve 532 drives the connecting ring 534 to move upward synchronously, compressing the first return spring 535. When the bottom of the clamping block 538 is higher than the upper part of the guide rail seat 4, stop moving upward and rotate the barrel sleeve 532. Then, pull the two moving rods 537 away from each other. The movement of the moving rods 537 stretches the second return spring 536. When the clamping block 538 avoids the upper space of the guide rail seat 4, stop pulling the moving rods 537. Then, release the barrel sleeve 532. At this time, the elastic force of the first return spring 535 can drive the barrel sleeve 532 to move downward, so that the limit rod 9 can be inserted into the limit port 10, which can not only limit the barrel sleeve 532, but also ensure that the clamping block 538 is perpendicular to the guide rail seat 4. Then, release the moving rods 537. The elastic force of the second return spring 536 can drive the clamping block 538 to approach the guide rail seat 4 and closely adhere to the outer side of the guide rail seat 4. At this time, the two guide rail seats 4 can be closely adhered to the positioning member 2.

[0044] Refer to Figure 1 and Figure 3 , a turntable 7 is arranged on the left side of the left rectangular plate 3. An insertion block 8 matched with the rectangular opening 514 is fixedly arranged on the right side of the turntable 7, and the insertion block 8 is inserted into the leftmost rectangular opening 514.

[0045] Refer to Figure 1 and Figure 2 , the distance - determining assembly 52 includes two rotating shafts 521 which are symmetrically distributed front - and - rear and rotatably arranged in the groove. A gear 522 meshing with the toothed plate 511 is fixedly arranged at the upper outer side of the rotating shaft 521. A rotating plate 523 is fixedly arranged at the lower outer side of the rotating shaft 521. A distance - determining wheel 524 is rotatably arranged on one side of the rotating plate 523 passing through the groove, and the outer side of the distance - determining wheel 524 contacts with one side of the guide rail seat 4.

[0046] Refer to Figure 3 , a guiding opening communicating with the groove is formed at the upper end inside the rectangular plate 3. A guiding block 13 is fixedly arranged at the upper part of the toothed plate 511. The upper part of the guiding block 13 penetrates into the guiding opening and is slidably connected with the guiding opening. A plurality of balls are arranged at the bottom of the rectangular plate 3, and the outer sides of the balls are in rolling contact with the upper part of the machine tool bed 1.

[0047] After the guide rail base 4 is in close contact with the positioning member 2, the operator inserts the insertion block 8 on the turntable 7 into the leftmost rectangular opening 514, ensuring that the insertion block 8 fits tightly with the rectangular opening 514 to achieve the assembly connection between the turntable 7 and the threaded rod 512. Then, the turntable 7 can be rotated to drive all the spliced threaded rods 512 to rotate synchronously. The rotation of the threaded rod 512 can drive the movement of the threaded sleeve 515 through the cooperation of the guide block 13 and the guide opening. The movement of the threaded sleeve 515 drives the movement of the toothed plate 511. The movement of the toothed plate 511 can drive the rotation of the two gears 522. The rotation of the gears 522 drives the rotation of the rotating plate 523. The rotation of the rotating plate 523 drives the rotation of the distance wheel 524. When the distance wheel 524 contacts the guide rail base 4, the continuous rotation of the distance wheel 524 will push the guide rail base 4 to slide on the machine tool bed 1. When the guide rail base 4 moves, observe the scale on the positioning plate 633, so that the moving position of the guide rail base 4 can be monitored by using the scale on the positioning plate 633. When it is found through observing the scale on the positioning plate 633 that the guide rail base 4 has moved to the specified position, stop rotating the turntable 7. Then, the distance between the two guide rail bases 4 can be adjusted through the cooperation of the distance wheel 524 and the clamping block 538 to ensure that the distance between the two guide rail bases 4 meets the welding requirements.

[0048] Then push the positioning member 2 to move. At this time, the two guide rail bases 4 move synchronously with the positioning member 2. Then observe the corresponding scales on the front side and the rear side of the machine tool bed 1 and the positioning plate 633, so that the distances between the rear guide rail base 4 and the rear side of the machine tool bed 1 and between the front guide rail base 4 and the front side of the machine tool bed 1 both reach the set values, thus completing the precise positioning of the two guide rail bases 4 on the machine tool bed 1. Then use the locking member 62 to lock the mounting plate 61 to the machine tool bed 1. Finally, the welding operation can be carried out on the guide rail base 4.

[0049] During the specific operation, place the guide rail base 4 to be welded on the machine tool bed 1. Select an appropriate number of rectangular plates 3 according to the length of the guide rail base 4. Splice multiple rectangular plates 3 and threaded rods 512 by means of insertion. Then install the mounting plate 61 on the left and right rectangular plates 3 with bolt 1. Then push the two side sliding plates 632 to move the positioning plate 633 synchronously according to the scale on the cross plate 631. After the positioning plate 633 is in contact with the guide rail base 4, lock the sliding plate 632 with bolt 2 to achieve the lateral alignment of the two guide rail bases 4.

[0050] Next, push the two guide rail seats 4 to fit with the positioning member 2. Then, pull up the barrel sleeve 532 by a certain distance and rotate the barrel sleeve 532. Then, use the telescopic member 533 to clamp the guide rail seat 4. Next, insert the insertion block 8 on the turntable 7 into the rectangular opening 514 of the leftmost threaded rod 512. Rotate the turntable 7 to drive the threaded rod 512 to rotate, drive the toothed plate 511 to move through the threaded sleeve 515, and make the gear 522, the rotating plate 523 and the fixed-distance wheel 524 rotate. The rotation of the fixed-distance wheel 524 pushes the guide rail seat 4 to move on the machine tool bed 1. Observe the scale of the cross plate 631. When the guide rail seat 4 moves to the specified position, stop rotating the turntable 7, so that the distance between the two guide rail seats 4 can be adjusted. Then, push the two guide rail seats 4 to move synchronously, and observe the corresponding scales on the front side and the rear side of the machine tool bed 1 and the positioning plate 633, so that the distances between the rear guide rail seat 4 and the rear side of the machine tool bed 1 and between the front guide rail seat 4 and the front side of the machine tool bed 1 both reach the set values. Finally, lock the mounting plate 61 on the machine tool bed 1 through the locking member 62, ensuring the accuracy of the welding position of the two guide rail seats 4 on the machine tool bed 1.

[0051] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A positioning tooling for welding of a machine tool component, comprising a positioning member arranged on the upper part of a machine tool body, characterized in that: The positioning member is formed by splicing a plurality of rectangular plates. A groove is formed inside the rectangular plate, and a distance - determining mechanism for determining the distance between two guide rail seats placed on the machine tool body is arranged in the groove; The distance - determining mechanism includes a driving component and a distance - determining component. The driving component includes a toothed plate arranged in the groove. The distance - determining component includes two rotating shafts that are rotatably arranged in the groove and symmetrically distributed front and back. A gear meshing with the toothed plate is fixedly arranged at the upper outer side of the rotating shaft. A rotating plate is fixedly arranged at the lower outer side of the rotating shaft. A distance - determining wheel is rotatably arranged on one side of the rotating plate passing through the groove, and the outer side of the distance - determining wheel is in contact with one side of the guide rail seat; A clamping component for clamping the two guide rails after distance - determination is arranged at the upper part of the rectangular plate. The clamping component includes a connecting rod fixedly arranged at the upper part of the rectangular plate. A sleeve is slidably arranged on the connecting rod, and telescopic components are arranged on both the front and back sides of the sleeve; Fixing components are arranged on the mutually - remote sides of the two rectangular plates on the left and right. Positioning components for aligning the guide rail seats left and right are arranged on the mutually - approaching sides of the two fixing components.

2. The positioning tooling for welding of a machine tool component according to claim 1, characterized in that, The driving component further includes a threaded rod rotatably arranged in the groove. A rectangular block is fixedly arranged at the right end of the threaded rod. A rectangular opening for cooperating with the rectangular block on the adjacent distance - determining mechanism is formed at the left end of the threaded rod. The threaded rods on two adjacent distance - determining mechanisms are connected by inserting the corresponding rectangular blocks into the corresponding rectangular openings. A threaded sleeve is arranged on the threaded rod in a threaded manner, and the upper part of the threaded sleeve is fixedly connected to the bottom of the toothed plate.

3. The positioning tooling for welding of a machine tool component according to claim 2, characterized in that, A turntable is arranged on the left side of the left - side rectangular plate. An insertion block cooperating with the rectangular opening is fixedly arranged on the right side of the turntable, and the insertion block is inserted into the left - most rectangular opening.

4. A positioning tooling for welding of a machine tool component according to claim 1, characterized in that, The clamping component further includes a connecting ring slidably arranged on the connecting rod. The upper part of the sleeve is rotatably connected to the bottom of the connecting ring. A first return spring is sleeved on the outer side of the connecting rod, and one end of the first return spring away from the connecting rod is connected to the upper part of the connecting ring.

5. A positioning tool for welding a machine tool component according to claim 1, characterized in that, The telescopic component includes a second return spring slidably arranged inside the sleeve. One end of the second return spring away from the connecting rod is fixedly arranged with a moving rod. One end of the moving rod away from the second return spring penetrates out of the inside of the sleeve and is fixedly arranged with a clamping block. One side of the clamping block close to the connecting rod abuts against one side of the guide rail seat.

6. The positioning tooling for welding of a machine tool component according to claim 1, characterized in that, Two limiting rods symmetrically distributed front and back are fixedly arranged at the upper part of the rectangular plate. Two limiting openings symmetrically distributed front and back and cooperating with the two limiting rods are formed at the bottom of the rectangular plate.

7. A positioning tooling for welding of a machine tool component according to claim 1, characterized in that, The fixing component includes mounting plates arranged on one side of the corresponding rectangular plate through two bolts. Locking pieces for locking the mounting plates to the machine tool body are fixedly arranged on the mutually - approaching sides of the two mounting plates.

8. A positioning tool for welding a machine tool component according to claim 7, characterized in that The positioning component includes two cross - plates symmetrically distributed front and back and fixedly arranged on the side of the mounting plate close to the rectangular plate. A sliding plate is slidably arranged between the two cross - plates. The sliding plate and the corresponding rectangular plate are locked by a bolt. Positioning plates are fixedly arranged at the bottoms of the two vertical sections of the sliding plate. One side of the positioning plate close to the guide rail seat is in contact with the guide rail seat. Scales are arranged on one side of the cross - plate close to the guide rail seat and on the upper part of the cross - plate.

9. The positioning tooling for welding of a machine tool component according to claim 1, characterized in that, Docking blocks are fixedly arranged at the right ends of the front and rear sides of the rectangular plate, and rectangular shells used in cooperation with the docking blocks are fixedly arranged at the left ends of the front and rear sides of the rectangular plate. Adjacent docking blocks and rectangular shells are inserted and locked through positioning pins.

10. A positioning tooling for welding of a machine tool component according to claim 1, characterized in that, A guiding port communicating with the groove is formed in the upper end inside the rectangular plate. A guiding block is fixedly arranged on the upper part of the toothed plate. The upper part of the guiding block penetrates into the guiding port and is slidably connected with the guiding port. A plurality of balls are arranged at the bottom of the rectangular plate, and the outer sides of the balls are in rolling contact with the upper part of the machine tool body.

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