Double-outlet piston hydraulic gear rolling machine oil cylinder constant temperature device

Abstract

The utility model relates to a kind of double-outlet piston hydraulic gear rolling machine oil cylinder constant temperature device.It solves the existing due to oil cylinder overlength cooling one end to the other end cycle time too long resulting in cooling effect is not ideal and other technical problems.The gear rolling machine sliding table is equipped with double-outlet piston hydraulic oil cylinder in gear rolling machine sliding table, double-outlet piston hydraulic oil cylinder has cylinder body and the piston rod being arranged in cylinder body and two ends extending cylinder body, gear rolling machine sliding table one side middle part is equipped with a cooling liquid inlet, and the gear rolling machine sliding table one side two ends are respectively equipped with cooling liquid outlet, cooling liquid inlet and cooling liquid outlet are respectively connected by spiral cooling flow guide structure between the circumferential outside of cylinder body and the circumferential inside of gear rolling machine sliding table.The advantage is that: through the bidirectional symmetrical cooling of spiral cooling flow guide structure, effectively balance cylinder body axial temperature distribution, shorten the distance of cooling travel simultaneously, quickly take away heat, avoid the uneven expansion of piston rod or the performance degradation of hydraulic oil due to local overheating.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric window curtain equipment technical field, concretely relates to a kind of double piston hydraulic gear rolling machine oil cylinder constant temperature device. BACKGROUND

[0002] In prior art, traditional double piston hydraulic gear rolling machine oil cylinder is generally as shown in Figure 1 When double piston hydraulic gear rolling machine starts to process parts, piston rod 22 does work in and out, a large amount of heat is generated, most of hot oil is taken away, but still a small part of heat is left in oil cylinder 21, internal temperature continues to rise, temperature will overflow and transfer to the outside of gear rolling machine sliding table 1, leading to overall thermal deformation, tool mounting surface will be elevated, elongated, until internal heat reaches a balance value, the whole thermal deformation is relatively stable, and stable time is about 30-40 minutes, seriously affect production efficiency, and the device is urgently needed to solve the problem of thermal deformation caused by internal heating of oil cylinder.

[0003] In order to solve the problems existing in the prior art, people have carried out long-term exploration and put forward various kinds of solutions. For example, Chinese patent document discloses a new double rod oil cylinder [202411825349.9], which comprises an oil cylinder, the oil cylinder comprises a cylinder body, a piston is slidably connected in the cylinder body, the piston is sleeved on a rod body, the rod body extends out of the cylinder body at both ends in a direction away from the cylinder body, a heat dissipation mechanism is sleeved on the cylinder body, the heat dissipation mechanism comprises a sleeve sleeved on the cylinder body, both ends of the sleeve are connected with the cylinder body through connecting pieces, the inner wall of the sleeve and the outer wall of the cylinder body and the two connecting pieces jointly form a heat dissipation cavity, one end of the sleeve is provided with a liquid inlet pipe, the other end of the sleeve is provided with a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe are communicated with the heat dissipation cavity.

[0004] The above scheme solves the problem of thermal deformation caused by internal heating of existing oil cylinder to some extent, but the scheme still has many deficiencies, such as the problem of unsatisfactory cooling effect caused by too long circulation time from one end to the other end during cooling of the oil cylinder. SUMMARY

[0005] The utility model aims at the above problem, and provides a double piston hydraulic gear rolling machine oil cylinder constant temperature device.

[0006] To achieve the above object, the utility model discloses the following technical scheme: a kind of double-out piston hydraulic gear rolling machine oil cylinder constant temperature device, including gear rolling machine sliding table, the gear rolling machine sliding table inside is equipped with double-out piston hydraulic oil cylinder, the double-out piston hydraulic oil cylinder has cylinder body and the piston rod that is arranged in cylinder body and two ends stretch out cylinder body, the middle part of gear rolling machine sliding table one side is equipped with a cooling liquid inlet, and the gear rolling machine sliding table one side both ends is equipped with cooling liquid outlet respectively, and the cooling liquid inlet and cooling liquid outlet are connected between the spiral cooling flow guide structure located between the circumferential outside of cylinder body and the circumferential inside of gear rolling machine sliding table respectively with intercommunication.The design of middle part liquid inlet, two ends liquid outlet, cooperate spiral cooling flow guide structure, so that cooling liquid can be evenly and comprehensively flow through the circumferential side of cylinder body, sufficient to take away heat, improve cooling efficiency, and this layout also shortens the distance of cooling travel.

[0007] In the above-mentioned double-out piston hydraulic gear rolling machine oil cylinder constant temperature device, the gear rolling machine sliding table has an oil cylinder mounting channel extending axially and penetrating through the end of the gear rolling machine sliding table at both ends, the oil cylinder mounting channel is matched with the shape of the cylinder body, and the cylinder body is fixedly arranged in the oil cylinder mounting channel. The oil cylinder mounting channel is matched with the shape of the cylinder body, and the cylinder body is fixedly arranged therein, which ensures the stability and accuracy of the cylinder body installation, prevents the double-out piston hydraulic oil cylinder from shaking during operation, provides a basis for stable operation of the equipment, and facilitates rapid conduction of heat generated by the cylinder body to the gear rolling machine sliding table, which facilitates heat dissipation of the cooling structure.

[0008] In the above-mentioned double-out piston hydraulic gear rolling machine oil cylinder constant temperature device, the cylinder body is in the shape of a cylinder, and the cylinder body has cylinder covers at both ends extending to the outside of the oil cylinder mounting channel, and the piston rod penetrates through the cylinder covers at both ends. The cylinder cover supports and guides the piston rod, improves the straightness and stability of the piston rod movement, reduces wear caused by shaking of the piston rod, and isolates the inside of the cylinder body from the external environment, which helps to maintain the sealing of the hydraulic system and prevents hydraulic oil leakage and foreign matter from entering.

[0009] In the above-mentioned double-out piston hydraulic gear rolling machine oil cylinder constant temperature device, spiral cooling flow guide structure includes a left spiral flow guide assembly and a right spiral flow guide assembly arranged on the circumferential outside of the cylinder body, the cooling liquid inlet is connected to one of the cooling liquid outlets through the left spiral flow guide assembly, and the cooling liquid inlet is connected to the remaining cooling liquid outlet through the right spiral flow guide assembly. The left spiral flow guide assembly and the right spiral flow guide assembly are connected to the cooling liquid inlet and different cooling liquid outlets respectively, forming two independent cooling paths, allowing the cooling liquid to spiral from the middle of the cylinder body to both ends, increasing the contact area between the cooling liquid and the cylinder body, and improving the heat exchange effect. At the same time, the double-path cooling can better balance the temperature at both ends of the cylinder body, shorten the cooling path, save time, and avoid local overheating.

[0010] In the above-mentioned hydraulic gear rolling machine oil cylinder constant temperature device, the left spiral guide assembly includes a left spiral rib arranged on the outer side of the cylinder body and extending from the middle part of the cylinder body to one end, the outer side of the left spiral rib abuts against the inner wall of the oil cylinder mounting channel, one side of the left spiral rib forms a left spiral groove, one end of the left spiral groove is connected with the cooling liquid inlet and the other end is connected with one of the cooling liquid outlets; the right spiral guide assembly includes a right spiral rib arranged on the outer side of the cylinder body and extending from the middle part of the cylinder body to the other end, the outer side of the right spiral rib abuts against the inner wall of the oil cylinder mounting channel, one side of the right spiral rib forms a right spiral groove, one end of the right spiral groove is connected with the cooling liquid inlet and the other end is connected with the remaining one of the cooling liquid outlets. The outer side of the spiral rib abuts against the inner wall of the oil cylinder mounting channel to form a closed spiral flow channel, preventing the cooling liquid from leaking or short-circuiting, ensuring that the cooling liquid flows along the preset path, thereby ensuring the reliability of the cooling effect, and the spiral groove provides a specific flow space for the cooling liquid, enhancing the orderliness and efficiency of cooling.

[0011] In the above-mentioned hydraulic gear rolling machine oil cylinder constant temperature device, the left spiral groove and the right spiral groove are opposite in rotation direction and are symmetrically arranged with the middle part of the cylinder body as the center. This design makes the flow resistance of the cooling liquid on both sides of the cylinder body basically consistent, ensuring uniform distribution of the cooling liquid flow, further improving the uniformity of the cylinder body temperature distribution, and avoiding deformation of the cylinder body or reduction of the piston rod movement precision due to uneven cooling.

[0012] In the above-mentioned hydraulic gear rolling machine oil cylinder constant temperature device, a plurality of sealing rings are arranged between the outer side of the cylinder body at both ends and the inner side of the oil cylinder mounting channel. The sealing rings effectively isolate the spiral cooling guide structure from the external environment, prevent the cooling liquid from leaking to other parts of the equipment, avoid corrosion of mechanical parts or affect their normal work, and at the same time, the sealing rings can also prevent dust and debris from entering the cooling flow channel, prevent the flow channel from being blocked, and ensure the long-term stable operation of the cooling system.

[0013] In the above-mentioned hydraulic gear rolling machine oil cylinder constant temperature device, two cooling liquid outlets are connected with the two ends of the liquid outlet pipe respectively, and a cooling liquid total outlet is arranged on the liquid outlet pipe. This simplifies the pipeline layout of the cooling system, makes the discharge of the cooling liquid more concentrated and orderly, facilitates the subsequent collection, treatment and recycling of the cooling liquid, and at the same time, this design also facilitates the inspection and maintenance of the cooling system, reduces the difficulty and cost of maintenance.

[0014] In the double-out hydraulic gear rolling machine oil cylinder constant temperature device, the upper end of the gear rolling machine sliding table is provided with a mounting bottom surface, one side of the mounting bottom surface is provided with a cutter holder, one side of the cutter holder is provided with a lower wedge, and both ends of the lower wedge are respectively provided with cutter holders.

[0015] In the double-out hydraulic gear rolling machine oil cylinder constant temperature device, the upper end of the gear rolling machine sliding table is provided with a mounting bottom surface, one side of the mounting bottom surface is provided with a cutter holder, one side of the cutter holder is provided with a lower wedge, and both ends of the lower wedge are respectively provided with cutter holders.

[0016] Compared with the prior art, the double-out hydraulic gear rolling machine oil cylinder constant temperature device has the following advantages:

[0017] 1. The device is bidirectionally and symmetrically cooled through the spiral cooling flow guide structure, effectively balances the axial temperature distribution of the cylinder body, shortens the cooling travel distance, quickly removes heat, avoids uneven expansion of the piston rod or degradation of the hydraulic oil performance caused by local overheating, and ensures the movement precision of the gear rolling machine sliding table.

[0018] 2. The left spiral flow guide assembly and the right spiral flow guide assembly of the device form a double-spiral convection cooling path, strengthen heat exchange through turbulence, significantly increase the contact area of the cooling liquid and the cylinder body, and improve the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure sectional view of a double-out hydraulic gear rolling machine oil cylinder in the prior art.

[0020] Figure 2 It is a structure schematic view of the utility model.

[0021] Figure 3 It is a structure schematic view of the double-out hydraulic oil cylinder in the utility model.

[0022] Figure 4 It is a structure schematic view of the gear rolling machine sliding table in the utility model.

[0023] Figure 5 It is a structure sectional view of the gear rolling machine sliding table and the cylinder body in the utility model.

[0024] In the figure: the sprocket machine sliding table 1, the oil cylinder installation channel 11, the installation bottom surface 12, the cutter seat 13, the lower wedge block 14, the cutter seat 15, the first upper wedge block 16, the second upper wedge block 17, the third upper wedge block 18, the front support block 19, the middle frame 20, the double-outlet piston hydraulic cylinder 2, the cylinder body 21, the piston rod 22, the cylinder cover 23, the sealing ring 24, the cooling liquid inlet 3, the cooling liquid outlet 31, the liquid outlet pipe 32, the cooling liquid total outlet 33, the spiral cooling guide structure 4, the left spiral guide assembly 41, the right spiral guide assembly 42, the left spiral rib 43, the left spiral groove 44, the right spiral rib 45, and the right spiral groove 46. DETAILED DESCRIPTION

[0025] The utility model will be made further detailed explanation in combination with the drawings and specific implementation.

[0026] As Figures 2-5 shown, a double-outlet piston hydraulic sprocket machine oil cylinder constant temperature device, including sprocket machine sliding table 1, sprocket machine sliding table 1 inside is equipped with double-outlet piston hydraulic oil cylinder 2, double-outlet piston hydraulic oil cylinder 2 has cylinder body 21 and the piston rod 22 that is set in cylinder body 21 and two ends stretches cylinder body 21, and sprocket machine sliding table 1 one side middle part is equipped with a cooling liquid inlet 3 and sprocket machine sliding table 1 one side both ends are equipped with cooling liquid outlet 31 respectively, and cooling liquid inlet 3 and cooling liquid outlet 31 are connected between through the spiral cooling guide structure 4 between the circumferential outside of cylinder body 21 and the circumferential inside of sprocket machine sliding table 1 respectively. Adopt the design of middle part liquid inlet, both ends liquid outlet, cooperate spiral cooling guide structure 4, make cooling liquid can evenly and comprehensively flow through the circumferential side of cylinder body 21, fully take away heat, improve cooling efficiency, and this layout also shortens the distance of cooling walking.

[0027] As Figure 5 shown, sprocket machine sliding table 1 has the oil cylinder installation channel 11 that extends axially and two ends respectively penetrates sprocket machine sliding table 1 end, and oil cylinder installation channel 11 is matched with the appearance of cylinder body 21 and cylinder body 21 is set in fixed in oil cylinder installation channel 11. Oil cylinder installation channel 11 is matched with the appearance of cylinder body 21 and cylinder body 21 is set in fixed, guarantees the stability and accuracy of cylinder body 21 installation, makes double-outlet piston hydraulic oil cylinder 2 not easy to produce wobble in the working process, provides the basis for the stable operation of equipment, and this design is advantageous to the heat generated by cylinder body 21 work is quickly conducted to sprocket machine sliding table 1, facilitates the cooling structure to radiate heat.

[0028] The cylinder body 21 is in a cylindrical shape and has cylinder covers 23 at both ends of the cylinder body 21, which extend to the outside of the oil cylinder mounting channel 11, and the piston rod 22 penetrates through the cylinder covers 23 at both ends. The cylinder covers 23 support and guide the piston rod 22, improve the straightness and stability of the movement of the piston rod 22, reduce the wear caused by the shaking of the piston rod 22, and isolate the inside of the cylinder body 21 from the outside environment, which helps to maintain the sealing of the hydraulic system and prevent the leakage of hydraulic oil and the entry of foreign matter.

[0029] In combination with the left spiral flow guide assembly 41 and the right spiral flow guide assembly 42 shown in Figs. Figure 3 、 Figure 4 and Figure 5 , the spiral cooling flow guide structure 4 includes the left spiral flow guide assembly 41 and the right spiral flow guide assembly 42 arranged on the circumferential outer side of the cylinder body 21. The cooling liquid inlet 3 is connected in communication with one of the cooling liquid outlets 31 through the left spiral flow guide assembly 41, and the cooling liquid inlet 3 is connected in communication with the remaining one of the cooling liquid outlets 31 through the right spiral flow guide assembly 42. The left spiral flow guide assembly 41 and the right spiral flow guide assembly 42 connect the cooling liquid inlet 3 with different cooling liquid outlets 31, respectively, to form two independent cooling paths, so that the cooling liquid can spiral from the middle of the cylinder body 21 to both ends, increase the contact area of the cooling liquid with the cylinder body 21, and improve the heat exchange effect. At the same time, the double-path cooling can better balance the temperature at both ends of the cylinder body 21, shorten the cooling path, save time, and avoid local overheating.

[0030] The left spiral flow guide assembly 41 includes a left spiral rib 43 arranged on the circumferential outer side of the cylinder body 21 and extending from the middle of the cylinder body 21 to one end, and the outer side of the left spiral rib 43 abuts against the inner wall of the oil cylinder mounting channel 11. The left spiral rib 43 forms a left spiral groove 44 on one side, and one end of the left spiral groove 44 is connected in communication with the cooling liquid inlet 3 and the other end is connected in communication with one of the cooling liquid outlets 31. The right spiral flow guide assembly 42 includes a right spiral rib 45 arranged on the circumferential outer side of the cylinder body 21 and extending from the middle of the cylinder body 21 to the other end, and the outer side of the right spiral rib 45 abuts against the inner wall of the oil cylinder mounting channel 11. The right spiral rib 45 forms a right spiral groove 46 on one side, and one end of the right spiral groove 46 is connected in communication with the cooling liquid inlet 3 and the other end is connected in communication with the remaining one of the cooling liquid outlets 31. The outer side of the spiral rib abuts against the inner wall of the oil cylinder mounting channel 11 to form a closed spiral flow channel, preventing the leakage or short circuit of the cooling liquid, ensuring the reliability of the cooling effect, and providing a specific flow space for the cooling liquid through the arrangement of the spiral groove, enhancing the orderliness and efficiency of cooling.

[0031] Specifically, the left spiral groove 44 and the right spiral groove 46 rotate in opposite directions and are symmetrically arranged with the middle of the cylinder 21 as the center. This design ensures that the flow resistance of the coolant on both sides of the cylinder 21 is basically the same, guaranteeing uniform coolant flow distribution, further improving the uniformity of temperature distribution in the cylinder 21, and avoiding deformation of the cylinder 21 or a decrease in the movement accuracy of the piston rod 22 due to uneven cooling.

[0032] Meanwhile, several sealing rings 24 are respectively provided on the outer sides of both ends of the cylinder body 21 and the inner side of the cylinder mounting channel 11, located on the outer sides of both ends of the spiral cooling guide structure 4. The sealing rings 24 effectively isolate the spiral cooling guide structure 4 from the external environment, preventing coolant leakage to other parts of the equipment and avoiding corrosion of mechanical parts or affecting their normal operation. At the same time, the sealing rings 24 can also prevent external dust, debris, etc. from entering the cooling channel, preventing channel blockage and ensuring the long-term stable operation of the cooling system.

[0033] Clearly, the two coolant outlets 31 are connected to both ends of the outlet pipe 32, and the outlet pipe 32 is equipped with a total coolant outlet 33. This simplifies the piping layout of the cooling system, making the discharge of coolant more concentrated and orderly, facilitating the subsequent collection, treatment and recycling of coolant. At the same time, this design also facilitates the inspection and maintenance of the cooling system, reducing maintenance difficulty and cost.

[0034] Combination Figure 2 and Figure 4 As shown, the upper end of the slide table 1 of the gear rolling machine has a mounting base 12, a tool holder 13 is provided on one side of the mounting base 12, a lower wedge block 14 is provided on one side of the tool holder 13, and tool holders 15 are provided at both ends of the lower wedge block 14.

[0035] Among them, the lower wedge block 14 is provided with a first upper wedge block 16 on the upper end of the side near the tool holder 13, a second upper wedge block 17 is provided on one side of the first upper wedge block 16, a third upper wedge block 18 is provided at one end of the second upper wedge block 17, a front support block 19 is provided between the second upper wedge block 17 and the third upper wedge block 18, and an intermediate frame 20 is provided between the front support block 19 and the tool holder 13.

[0036] The principle of this embodiment is as follows:

[0037] The piston rod 22 moves axially along the cylinder body 21 by hydraulic drive. When the double-piston hydraulic cylinder 2 is working, heat is generated due to friction and pressure changes of the hydraulic oil. The coolant enters the cylinder mounting channel 11 from the coolant inlet 3. The coolant flows to both ends of the cylinder body 21 through the left spiral groove 44 and the right spiral groove 46 respectively. Then the coolant merges into the outlet pipe 32 through the coolant outlets 31 at both ends, thus forming a bidirectional symmetrical cooling path to ensure uniform heat dissipation around the cylinder body. At the same time, the left and right split-flow cooling shortens the cooling path and quickly removes heat.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

[0039] Although the terms such as rack gear sliding table 1, oil cylinder installation channel 11, installation bottom surface 12, tool holder 13, lower wedge block 14, tool holder 15, first upper wedge block 16, second upper wedge block 17, third upper wedge block 18, front support block 19, middle frame 20, double-outlet piston hydraulic oil cylinder 2, cylinder body 21, piston rod 22, cylinder cover 23, sealing ring 24, cooling liquid inlet 3, cooling liquid outlet 31, liquid outlet pipe 32, cooling liquid total outlet 33, spiral cooling flow guide structure 4, left spiral flow guide assembly 41, right spiral flow guide assembly 42, left spiral rib 43, left spiral groove 44, right spiral rib 45, right spiral groove 46 are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the present application; any additional limitation is contrary to the spirit of the present application.

Claims

1. A double-outlet-piston hydraulic gear rolling machine oil cylinder thermostat device, comprising a gear rolling machine sliding table (1), wherein a double-outlet-piston hydraulic oil cylinder (2) is arranged in the gear rolling machine sliding table (1), and the double-outlet-piston hydraulic oil cylinder (2) has a cylinder body (21) and a piston rod (22) arranged in the cylinder body (21) and extending out of the cylinder body (21) at both ends, characterized in that, The gear rolling machine slide (1) has a coolant inlet (3) in the middle of one side and coolant outlets (31) at both ends of one side. The coolant inlet (3) and coolant outlet (31) are connected by a spiral cooling guide structure (4) located between the outer circumferential side of the cylinder (21) and the inner circumferential side of the gear rolling machine slide (1).

2. The constant temperature device for the oil cylinder of a double-output piston hydraulic gear rolling machine according to claim 1, characterized in that, The slide (1) of the gear rolling machine has an axially extending oil cylinder mounting channel (11) that passes through the ends of the slide (1) of the gear rolling machine. The oil cylinder mounting channel (11) matches the shape of the cylinder body (21) and the cylinder body (21) is fixed inside the oil cylinder mounting channel (11).

3. The constant temperature device for the oil cylinder of a double-output piston hydraulic gear rolling machine according to claim 2, characterized in that, The cylinder body (21) is cylindrical and has cylinder covers (23) extending to the outside of the cylinder mounting channel (11) at both ends. The piston rod (22) passes through the cylinder covers (23) at both ends.

4. A thermostatic device for a hydraulic cylinder of a double-output piston gear rolling machine according to claim 2 or 3, characterized in that, The spiral cooling guide structure (4) includes a left spiral guide assembly (41) and a right spiral guide assembly (42) disposed on the outer side of the cylinder body (21). The coolant inlet (3) is connected to one of the coolant outlets (31) through the left spiral guide assembly (41), and the coolant inlet (3) is connected to the remaining coolant outlet (31) through the right spiral guide assembly (42).

5. A thermostatic device for a hydraulic cylinder of a double-output piston gear rolling machine according to claim 4, wherein The left spiral guide assembly (41) includes a left spiral rib (43) disposed on the outer circumference of the cylinder body (21) and extending from the middle of the cylinder body (21) to one end. The outer side of the left spiral rib (43) abuts against the inner wall of the cylinder mounting channel (11). A left spiral groove (44) is formed on one side of the left spiral rib (43). One end of the left spiral groove (44) is connected to the coolant inlet (3) and the other end is connected to one of the coolant outlets (31). The right spiral guide assembly (42) includes a right spiral rib (45) disposed on the outer circumference of the cylinder body (21) and extending from the middle of the cylinder body (21) to the other end. The outer side of the right spiral rib (45) abuts against the inner wall of the cylinder mounting channel (11). A right spiral groove (46) is formed on one side of the right spiral rib (45). One end of the right spiral groove (46) is connected to the coolant inlet (3) and the other end is connected to the remaining coolant outlet (31).

6. A thermostatic device for a hydraulic cylinder of a double-output piston gear rolling machine according to claim 5, wherein The left spiral groove (44) and the right spiral groove (46) have opposite directions of rotation and are symmetrically arranged with the center of the cylinder body (21) as the center.

7. The constant temperature device for the hydraulic cylinder of a double-output piston gear rolling machine according to claim 2, characterized in that, Several sealing rings (24) located on the outer sides of both ends of the cylinder body (21) and the inner side of the oil cylinder mounting channel (11) are respectively provided.

8. The constant temperature device for the hydraulic cylinder of a double-output piston gear rolling machine according to claim 1, characterized in that, Two coolant outlets (31) are connected to both ends of the outlet pipe (32), and the outlet pipe (32) is provided with a total coolant outlet (33).

9. The constant temperature device for the hydraulic cylinder of a double-output piston gear rolling machine according to claim 1, characterized in that, The slide table (1) of the gear rolling machine has an upper mounting surface (12), a tool holder (13) is provided on one side of the mounting surface (12), a lower wedge block (14) is provided on one side of the tool holder (13), and tool holders (15) are provided at both ends of the lower wedge block (14).

10. The constant temperature device for a hydraulic cylinder of a double-output piston gear rolling machine according to claim 9, wherein The lower wedge block (14) is provided with a first upper wedge block (16) on the upper end near the tool holder (13), a second upper wedge block (17) is provided on one side of the first upper wedge block (16), a third upper wedge block (18) is provided at one end of the second upper wedge block (17), a front support block (19) is provided between the second upper wedge block (17) and the third upper wedge block (18), and an intermediate frame (20) is provided between the front support block (19) and the tool holder (13).

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